1. Department of Plastic Surgery, Peking Union Medical College Hospital, Beijing, China
2. Plastic Surgery Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
3. Department of Orthopaedics, Qingdao Huangdao District Hospital of Traditional Chinese Medicine, Qingdao, China
4. International Education College, Beijing Vocational College of Agriculture, Beijing, China
5. College of Life Science and Bioengineering, Beijing University of Technology, Beijing, China
6. Department of Information Engineering, Chaoshan Polytechnic College, Puning, China