首页 | 本学科首页   官方微博 | 高级检索  
相似文献
 共查询到20条相似文献,搜索用时 31 毫秒
1.
Anatomical education has been undergoing reforms in line with the demands of medical profession. The aim of the present study is to assess the impact of a traditional method like cadaveric dissection in teaching/learning anatomy at present times when medical schools are inclining towards student‐centered, integrated, clinical application models. The article undertakes a review of literature and analyzes the observations made therein reflecting on the relevance of cadaveric dissection in anatomical education of 21st century. Despite the advent of modern technology and evolved teaching methods, dissection continues to remain a cornerstone of anatomy curriculum. Medical professionals of all levels believe that dissection enables learning anatomy with relevant clinical correlates. Moreover dissection helps to build discipline independent skills which are essential requirements of modern health care setup. It has been supplemented by other teaching/learning methods due to limited availability of cadavers in some countries. However, in the developing world due to good access to cadavers, dissection based teaching is central to anatomy education till date. Its utility is also reflected in the perception of students who are of the opinion that dissection provides them with a foundation critical to development of clinical skills. Researchers have even suggested that time has come to reinstate dissection as the core method of teaching gross anatomy to ensure safe medical practice. Nevertheless, as dissection alone cannot provide uniform learning experience hence needs to be complemented with other innovative learning methods in the future education model of anatomy. Anat Sci Educ 10: 286–299. © 2016 American Association of Anatomists.  相似文献   

2.
Anatomical education in the United Kingdom (UK) and Ireland has long been under scrutiny, especially since the reforms triggered in 1993 by the General Medical Council's “Tomorrow's Doctors.” The aim of the current study was to investigate the state of medical student anatomy education in the UK and Ireland in 2019. In all, 39 medical schools completed the survey (100% response rate) and trained 10,093 medical students per year cohort. The teachers comprised 760 individuals, of these 143 were employed on full-time teaching contracts and 103 were employed on education and research contracts. Since a previous survey in 1999, the number of part-time staff has increased by 300%, including a significant increase in the number of anatomy demonstrators. In 2019, anatomy was predominantly taught to medical students in either a system-based or hybrid curriculum. In all, 34 medical schools (87%) used human cadavers to teach anatomy, with a total of 1,363 donors being used per annum. Gross anatomy teaching was integrated with medical imaging in 95% of medical schools, embryology in 81%, living anatomy in 78%, neuroanatomy in 73%, and histology in 68.3%. Throughout their five years of study, medical students are allocated on average 85 h of taught time for gross anatomy, 24 h for neuroanatomy, 24 h for histology, 11 h for living anatomy, and 10 for embryology. In the past 20 years, there has been an average loss of 39 h dedicated to gross anatomy teaching and a reduction in time dedicated to all other anatomy sub-disciplines.  相似文献   

3.
Utilizing reality anatomy such as dissection and demonstrating using cadavers has been described as a superior way to create meaning. The chemicals used to embalm cadavers differentially alter the tissue of the human body, which has led to the usage of different processes along the hard to soft‐fixed spectrum of preserved cadavers. A questionnaire based approach was used to gain a better insight into the opinion of anatomists on the use of preserved cadavers for the teaching of human anatomy. This study focused on anatomy teachers in the United Kingdom and Ireland. From the 125 participating anatomists, 34.4% were medically qualified, 30.4% had a PhD in a non‐anatomical science and 22.4% had a PhD in an anatomical science, these figures include ten anatomists who had combinations of MD with the two other PhD qualifications. The main findings from the questionnaire were that 61.6% of participants agreed that hard‐fixed formalin cadavers accurately resemble features of a human body whereas 21.6% disagreed. Moreover, anatomists rated the teaching aids on how accurately they resemble features of the human body as follows: plastic models the least accurate followed by plastinated specimens, hard fixed cadavers; soft preserved cadavers were considered to be the most accurate when it comes to resembling features of the human body. Though anatomists considered soft preserved cadavers as the most accurate tool, further research is required in order to investigate which techniques or methods provide better teaching tool for a range of anatomical teaching levels and for surgical training. Anat Sci Educ 10: 137–143. © 2016 American Association of Anatomists.  相似文献   

4.
Pathology and anatomy are both sciences that contribute to the foundations of a successful medical career. In the past decade, medical education has undergone profound changes with the development of a core curriculum combined with student selected components. There has been a shift from discipline‐based teaching towards problem‐based learning. Both anatomy and pathology are perceived to have suffered from this educational shift. The challenge is to introduce methods of learning for these subjects into an integrated student‐centered curriculum. The purpose of this study was to determine the prevalence of pathology in 12 donor cadavers in the dissecting room of the Bute Medical School, University of St Andrews. All of the cadavers had multiple pathologies (between three to four conditions) ranging from common to rare disorders. A number of prostheses and surgical interventions were also noted. This small study confirms that cadaveric dissection provides an excellent opportunity for the integration of anatomy, pathology, and clinical medicine into the early clinical training of undergraduate medical students. The identification of disease in a cadaver provides an excellent introduction to the gross features of a disease process, but does not substitute for the detailed study of a process later in the curriculum. Anat Sci Educ 3: 97–100, 2010. © 2010 American Association of Anatomists.  相似文献   

5.
The debate surrounding the use of cadavers in teaching anatomy has focused almost exclusively on the pedagogic role of cadaver dissection in medical education. The aim of this study was to explore the wider aspects of a body bequest program for teaching and research into gross anatomy in a University setting. A retrospective audit was undertaken on body donation and the use of cadaver specimens for teaching and research at our institution between 1876 and 2009. The body bequest program, first established in 1943, now receives more than 40 donations per year. In addition to the medical course, nine other University degrees and courses currently use cadaver specimens for gross anatomy; four of these are research degrees and the remainder undergraduate degrees and courses. The use of cadaver specimens by non‐University groups has also increased, particularly during the past decade, such that there are now 16 different groups using cadaver specimens for instructional courses; most of these are professional medical courses. The use of cadavers for both research and teaching may encourage a more evidence‐based approach to clinical anatomy. This unique audit, spanning more than a century of anatomy education within a single University Medical School, highlights the utility of a robust body bequest program and the wide range of students and health professionals who interact with this precious resource. Anat Sci Educ 2:234–237, 2009 © 2009 American Association of Anatomists.  相似文献   

6.
The aims of this review were to examine the place of surface anatomy in the medical literature, particularly the methods and approaches used in teaching surface and living anatomy and assess commonly used anatomy textbooks in regard to their surface anatomy contents. PubMed and MEDLINE databases were searched using the following keywords “surface anatomy,” “living anatomy,” “teaching surface anatomy,” “bony landmarks,” “peer examination” and “dermatomes”. The percentage of pages covering surface anatomy in each textbook was calculated as well as the number of images covering surface anatomy. Clarity, quality and adequacy of surface anatomy contents was also examined. The search identified 22 research papers addressing methods used in teaching surface anatomy, 31 papers that can help in the improvement of surface anatomy curriculum, and 12 anatomy textbooks . These teaching methods included: body painting, peer volunteer surface anatomy, use of a living anatomy model, real time ultrasound, virtual (visible) human dissector (VHD), full body digital x‐ray of cadavers (Lodox® Statscan® images) combined with palpating landmarks on peers and the cadaver, as well as the use of collaborative, contextual and self‐directed learning. Nineteen of these studies were published in the period from 2006 to 2013. The 31 papers covered evidence‐based and clinically‐applied surface anatomy. The percentage of surface anatomy in textbooks' contents ranged from 0 to 6.2 with an average of 3.4%. The number of medical illustrations on surface anatomy varied from 0 to 135. In conclusion, although there has been a progressive increase in publications addressing methods used in teaching surface anatomy over the last six to seven years, most anatomy textbooks do not provide students with adequate information about surface anatomy. Only three textbooks provided a solid explanation and foundation of understanding surface anatomy. Anat Sci Educ 6: 415–432. © 2013 American Association of Anatomists.  相似文献   

7.
As human cadavers are widely used in basic sciences, medical education, and other training and research venues, there is a real need for experts trained in anatomy and dissection. This article describes a program that gives individuals interested in clinical and basic sciences practical experience working with cadavers. Participants are selected through an open application process and attend sessions focused on anatomical terminology, gross anatomy and radiography, and some of the educational applications of human cadavers. Dissection skills are honed during an intensive, two‐day cadaver dissection and orthopedic workshop. Participants communicate the knowledge they gain through table‐side discussions, reflect upon the experience during a memorial service, and submit written program evaluations. Additionally, the dissection and preparation of cadaveric materials accomplished in this course are used in the medical school gross anatomy course during the next academic year. From 2004 through 2008, the annual number of applicants increased from 40 to 167, and the number of participants increased from 25 to 43 per year. Program participants have represented diverse ethnic, educational, and professional backgrounds. Feedback from participants has been remarkably positive, including comments on the large amount of learning that takes place during the sessions, the positive impact the program has had on career choice, and the desire for program expansion. This program, which could be replicated at other institutions, teaches anatomy, prepares cadaveric prosections for teaching and training others, and encourages participants to pursue careers in anatomical and biomedical sciences. Anat Sci Educ 3: 77–82, 2010. © 2010 American Association of Anatomists.  相似文献   

8.
It is essential for medical students to learn and comprehend human anatomy in three dimensions (3D). With this in mind, a new system was designed in order to integrate anatomical dissections with diagnostic computed tomography (CT) radiology. Cadavers were scanned by CT scanners, and students then consulted the postmortem CT images during cadaver dissection to gain a better understanding of 3D human anatomy and diagnostic radiology. Students used handheld digital imaging and communications in medicine viewers at the bench‐side (OsiriX on iPod touch or iPad), which enabled “pixel‐to‐tissue” direct comparisons of CT images and cadavers. Students had lectures and workshops on diagnostic radiology, and they completed study assignments where they discussed findings in the anatomy laboratory compared with CT radiology findings. This teaching method for gross and radiological anatomy was used beginning in 2009, and it yielded strongly positive student perspectives and significant improvements in radiology skills in later clinical courses. Anat Sci Educ 7: 438–449. © 2014 American Association of Anatomists.  相似文献   

9.
Despite nearly 200 accredited entry‐level physical therapist education programs in the United States that culminate in a doctoral degree, only a paucity of reports have been published regarding the efficacy of peer teaching in gross anatomy. No one has described the usefulness of peer teaching from the viewpoint of the peer teacher. An organized peer teaching method provided by four second‐year doctors of physical therapy (DPT) students in a semester course in gross anatomy had a positive impact on the academic performance in gross anatomy of first‐year DPT students. The unique feature of the weekly peer teaching sessions was a packet assembled by the second‐year peer teachers, which contained diagrams, fill‐in‐the blank questions, and helpful mnemonic devices. This study surveyed perceptions of first‐year DPT students in response to a peer teaching method, using a structured 10‐item questionnaire and a five‐point Likert scale. Second‐year DPT peer teachers provided written reflections about the benefits and challenges of serving as a peer teacher. Results revealed that 13 planned peer‐teaching experiences provided by four second‐year DPT students were valuable and promoted a firm understanding of anatomical relationships important for the clinical competence of physical therapist students. Moreover, peer teachers acknowledged acquiring clinically desirable teaching, academic, organizational, and time management skills from the experience. As a result, physical therapist educators may wish to consider this model of peer teaching to augment their teaching strategies for a class in gross human anatomy. Anat Sci Ed 1:199–206, 2008. © 2008 American Association of Anatomists.  相似文献   

10.
Changes in medical education have affected both curriculum design and delivery. Many medical schools now use integrated curricula and a systemic approach, with reduced hours of anatomy teaching. While learning anatomy via dissection is invaluable in educational, professional, and personal development, it is time intensive and supports a regional approach to learning anatomy; the use of prosections has replaced dissection as the main teaching method in many medical schools. In our graduate‐entry medical degree, we use an integrated curriculum, with prosections to teach anatomy systemically. However, to not exclude dissection completely, and to expose students to its additional and unique benefits, we implemented a short “Dissection Experience” at the beginning of Year 2. Students attended three two‐hour anatomy sessions and participated in dissection of the clinically relevant areas of the cubital fossa, femoral triangle, and infraclavicular region. This activity was voluntary and we retrospectively surveyed all students to ascertain factors influencing their decision of whether to participate in this activity, and to obtain feedback from those students who did participate. The main reasons students did not participate were previous dissection experience and time constraints. The reasons most strongly affecting students' decisions to participate related to experience (lack of previous or new) and new skill. Students' responses as to the most beneficial component of the dissection experience were based around practical skills, anatomical education, the learning process, and the body donors. We report here on the benefits and practicalities of including a short dissection experience in a systemic, prosection‐based anatomy course. Anat Sci Educ 6: 225–231. © 2013 American Association of Anatomists.  相似文献   

11.
Thiel‐embalmed cadavers, which have been adopted for use in anatomy teaching in relatively few universities, show greater flexibility and color retention compared to formalin‐embalmed cadavers, properties which might be considered advantageous for anatomy teaching. This study aimed to investigate student attitudes toward the dissection experience with Thiel‐ compared to formalin/ethanol‐embalmed cadavers. It also aimed to determine if one embalming method is more advantageous in terms of learning functional anatomy through the comparison of student anterior forearm functional anatomy knowledge. Student opinions and functional anatomy knowledge were obtained through use of a questionnaire from students at two medical schools, one using Thiel‐, and one using more traditional formalin/ethanol‐embalmed cadavers. Both the Thiel group and the formalin group of students were surveyed shortly after completing an anterior forearm dissection session. Significant differences (P‐values <0.01) in some attitudes were found toward the dissection experience between cohorts using Thiel‐ vs. formalin‐embalmed cadavers. The Thiel group of students felt more confident about recognizing anatomy in the living individual, found it easier to identify and dissect anatomical structures, and indicated more active exploration of functional anatomy due to the retained flexibility of the cadaver. However, on testing, no significant difference in functional anatomy knowledge was found between the two cohorts. Overall, although Thiel embalming may provide an advantageous learning experience in some investigated areas, more research needs to be carried out, especially to establish whether student perception is based on reality, at least in terms of structure identification. Anat Sci Educ 11: 166–174. © 2017 American Association of Anatomists.  相似文献   

12.
Both in mainland China and around the world, regional anatomy stands as one of the most important basic science courses in medical school curricula. As such, dissection of human cadavers and use of prosected specimens remains the most essential teaching method in anatomy education. However, medical educators have raised increasing concerns about an ongoing shortage of cadavers for medical use in mainland China, a problem which may seriously limit the future development of human anatomy education. Based on a survey on cadaver usage in anatomy education in mainland China, this study found that the cadaver resources of most given medical schools in mainland China are associated with their geographic location, academic ranking, and local support for body donation policies. Effective measures to alleviate this shortage of cadavers may include future efforts to promote national‐level body donation legislation, broader acceptance of body donation among Chinese citizens, and an efficient and humane protocol for body donation. Anat Sci Educ 11: 397–402. © 2018 American Association of Anatomists.  相似文献   

13.
Traditional methods of teaching anatomy to undergraduate medical and veterinary students are being challenged and need to adapt to modern concerns and requirements. There is a move away from the use of cadavers to new technologies as a way of complementing the traditional approaches and addressing resource and ethical problems. Haptic (touch) technology, which allows the student to feel a 3D computer‐generated virtual environment, provides a novel way to address some of these challenges. To evaluate the practicalities and usefulness of a haptic simulator, first year veterinary students at the Royal Veterinary College, University of London, were taught basic bovine abdominal anatomy using a rectal palpation simulator: “The Haptic Cow.” Over two days, 186 students were taught in small groups and 184 provided feedback via a questionnaire. The results were positive; the majority of students considered that the simulator had been useful for appreciating both the feel and location of key internal anatomical structures, had helped with their understanding of bovine abdominal anatomy and 3D visualization, and the tutorial had been enjoyable. The students were mostly in favor of the small group tutorial format, but some requested more time on the simulator. The findings indicate that the haptic simulator is an engaging way of teaching bovine abdominal anatomy to a large number of students in an efficient manner without using cadavers, thereby addressing some of the current challenges in anatomy teaching. Anat Sci Educ 2: 280–285, 2009. © 2009 American Association of Anatomists  相似文献   

14.
Ultrasound use has expanded dramatically among the medical specialties for diagnostic and interventional purposes, due to its affordability, portability, and practicality. This imaging modality, which permits real‐time visualization of anatomic structures and relationships in vivo, holds potential for pre‐clinical instruction of students in anatomy and physical diagnosis, as well as providing a bridge to the eventual use of bedside ultrasound by clinicians to assess patients and guide invasive procedures. In many studies, but not all, improved understanding of anatomy has been demonstrated, and in others, improved accuracy in selected aspects of physical diagnosis is evident. Most students have expressed a highly favorable impression of this technology for anatomy education when surveyed. Logistic issues or obstacles to the integration of ultrasound imaging into anatomy teaching appear to be readily overcome. The enthusiasm of students and anatomists for teaching with ultrasound has led to widespread implementation of ultrasound‐based teaching initiatives in medical schools the world over, including some with integration throughout the entire curriculum; a trend that likely will continue to grow. Anat Sci Educ 10: 176–189. © 2016 American Association of Anatomists.  相似文献   

15.
The teaching of human anatomy has had to respond to significant changes in medical curricula, and it behooves anatomists to devise alternative strategies to effectively facilitate learning of the discipline by medical students in an integrated, applied, relevant, and contextual framework. In many medical schools, the lack of cadaver dissection as the primary method of learning is driving changes to more varied and novel learning and teaching methodologies. The present article describes the introduction and evaluation of a range of body painting exercises in a medical curriculum. Body painting was introduced into integrated clinical skills teaching sessions which included clinically important aspects of respiratory system, musculoskeletal system, and topics in regional anatomy including head and neck. Nontoxic body paints, easels, a mixture of brush sizes, and anatomical images were supplied. Students were allowed between 20 and 40 min to complete body painting tasks, in which they were encouraged to alternate between painting and acting as a model. Students were encouraged to use life‐like rendering and coloration where appropriate. Evaluation of these sessions was performed at the end of the semester as part of a larger evaluation process. The kinesthetic nature and active participation together with the powerful visual images of underlying anatomy appear to contribute to the value of body painting as a teaching exercise. In addition, it may have the added bonus of helping break down apprehension regarding peer–peer examination. Some practical advice on introducing this method of teaching in medical curricula based on the outcomes of the evaluation is given. On the basis of our experience and student feedback, we strongly advocate the use of body painting as an adjunct to surface anatomy and clinical skills teaching classes. Anat Sci Ed 2008. © 2008 American Association of Anatomists.  相似文献   

16.
The teaching of gross anatomy has, for centuries, relied on the dissection of human cadavers, and this formative experience is known to evoke strong emotional responses. The authors hypothesized that the phenomenon of cadaver naming is a coping mechanism used by medical students and that it correlates with other attitudes about dissection and body donation. The authors developed a 33‐question electronic survey to which 1,156 medical students at 12 medical schools in the United States voluntarily responded (November 2011–March 2012). They also surveyed course directors from each institution regarding their curricula and their observations of students' coping mechanisms. The majority of students (574, 67.8%) named their cadaver. Students most commonly cited the cadaver's age as the reason they chose a particular name for the cadaver. A minority of the students who did not name the cadaver reported finding the practice of naming disrespectful. Almost all students indicated that they would have liked to know more about their donor, particularly his or her medical history. Finally, students who knew the birth name of the donor used it less frequently than predicted. The authors found that the practice of naming cadavers is extremely prevalent among medical students and that inventive naming serves as a beneficial coping mechanism. The authors suggest that developing a method of providing students with more information about their cadaver while protecting the anonymity of the donor and family would be useful. Anat Sci Educ 7: 169–180. © 2013 American Association of Anatomists.  相似文献   

17.
Peer teaching has been recognized as a valuable and effective approach for learning and has been incorporated into medical, dental, and healthcare courses using a variety of approaches. The success of peer teaching is thought to be related to the ability of peer tutors and tutees to communicate more effectively, thereby improving the learning environment. Near‐peer teaching involves more experienced students acting as tutors who are ideally placed to pass on their knowledge and experience. The advantage of using near‐peer teachers is the opportunity for the teacher to reinforce and expand their own learning and develop essential teaching skills. This study describes the design and implementation of a program for fourth year medical students to teach anatomy to first‐ and second‐year medical students and evaluates the perceptions of the near‐peer teachers on the usefulness of the program, particularly in relation to their own learning. Feedback from participants suggests that the program fulfills its aims of providing an effective environment for developing deeper learning in anatomy through teaching. Participants recognize that the program also equips them with more advanced teaching skills that will be required as they move nearer toward taking on supervisory and teaching duties. The program has also provided the school with an additional valuable and appropriate resource for teaching anatomy to first‐ and second‐year students, who themselves view the inclusion of near‐peer teachers as a positive element in their learning. Anat Sci Educ 2:227–233, 2009. © 2009 American Association of Anatomists.  相似文献   

18.
Radiological imaging is gaining relevance in the acquisition of competencies in clinical anatomy. The aim of this study was to evaluate the perceptions of medical students on teaching/learning of imaging anatomy as an integrated part of anatomical education. A questionnaire was designed to evaluate the perceptions of second‐year students participating in a clinical anatomy course over three consecutive academic years. A principal component analysis was used to evaluate the dimensionality of the questionnaire. The variables were summarized using frequencies, mean, median, 25th percentile, 75th percentile, minimum, and maximum. The results demonstrated that students felt the teaching of imaging anatomy influenced learning in the clinical anatomy course (mean = 4.5, median = 5.0) and subsequent clinical courses (mean = 4.4, median = 4.0). Regarding the imaging techniques used in the demonstration of anatomical structures, computed tomography (median = 5.0) and magnetic resonance imaging (median = 5.0) were highly rated. Students suggested the use of additional support material (37.6%) and favored a more practical approach. In conclusion, the results of this work highlight the value of imaging anatomy in learning human anatomy. Students' comments pointed out a need to focus teaching/learning programs toward a more practical rather than theoretical approach as well as a need to provide a better fit between sectional anatomy and clinical cases using imaging anatomy. In order to provide an optimal learning environment to students, it also seems important to create improved media material as an additional resource tool. Anat Sci Educ. © 2013 American Association of Anatomists.  相似文献   

19.
Hands‐on educational experiences can stimulate student interest, increase knowledge retention, and enhance development of clinical skills. The Lachman test, used to assess the integrity of the anterior cruciate ligament (ACL), is commonly performed by health care professionals and is relatively easy to teach to first‐year health profession students. This study integrated teaching the Lachman test into a first‐year anatomy laboratory and examined if students receiving the training would be more confident, competent, and if the training would enhance anatomical learning. First‐year medical, physician assistant and physical therapy students were randomly assigned into either the intervention (Group A) or control group (Group B). Both groups received the course lecture on knee anatomy and training on how to perform the Lachman test during a surface anatomy class. Group A received an additional 15 minutes hands‐on training for the Lachman test utilizing a lightly embalmed cadaver as a simulated patient. One week later, both groups performed the Lachman test on a lightly embalmed cadaver and later completed a post‐test and survey. Students with hands‐on training performed significantly better than students with lecture‐only training in completing the checklist, a post‐test, and correctly diagnosing an ACL tear. Students in Group A also reported being more confident after hands‐on training compared to students receiving lecture‐only training. Both groups reported that incorporating clinical skill activities facilitated learning and created excitement for learning. Hands‐on training using lightly embalmed cadavers as patient simulators increased confidence and competence in performing the Lachman test and aided in learning anatomy. Anat Sci Educ 7: 181–190. © 2013 American Association of Anatomists.  相似文献   

20.
Anatomical understanding is critical to medical education. With reduced teaching time and limited cadaver availability, it is important to investigate how best to utilize in vivo imaging to supplement anatomical understanding and better prepare medical graduates for the proliferation of point‐of‐care imaging in the future. To investigate whether using short sessions of in vivo imaging using ultrasonography could benefit students' anatomical knowledge and clinical application, we conducted a 2‐hour session on abdominal anatomy using ultrasonography in small groups of five to six students, for both first‐ and second‐year student cohorts. Individual feedback was collected to assess student perceptions. To measure retention and understanding, a short examination containing ultrasound images and questions and performance of a clinical skill (gastrointestinal' tract examination) were assessed. Ultrasonography sessions were highly valued by the students, with 90% of the students reporting their understanding was improved, and over 70% reporting increased confidence in their anatomical knowledge. However, the assessments showed no appreciable impact on skills or understanding related to abdominal anatomy and examination. We conclude that the risk associated with limited exposure increasing confidence without increasing skills remains real and that in vivo imaging is not effective when used as a short adjunct teaching tool. The widespread use of ultrasonography means finding the best way to incorporate ultrasound into medical education remains important. To this end, we are currently implementing an extended program including echocardiography and multiple anatomical sessions that will determine if frequency and repetition of use can positively impact on student performance and understanding. Anat Sci Educ. © 2013 American Association of Anatomists.  相似文献   

设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号