1. Diabetic Foot Centre, The Air Force Hospital From Eastern Theater of PLA, Nanjing, 210002, China
2. Department of Burn and Plastic Surgery, Affiliated Hospital of Jiangnan University, Wuxi, 214062, China
3. Department of endocrinology, the First Affiliated Hospital of Suzhou University, Suzhou, 215006, China
4. Department of endocrinology, Jiangsu Province Hospital, Nanjing, 210029, China
5. Department of endocrinology, Xuzhou Central Hospital, Xuzhou, 221009,China
6. Vascular Surgery, Gulou Hospital, Nanjing, 210008, China
7. Department of orthopedics, Nanjing First Hospital, Nanjing, 210006, China
8. Department of endocrinology, The Second Affiliated Hospital of Suzhou University, Suzhou, 215004, China
9. Department of endocrinology, Jiangsu Province Hospital on Traditional of Chinese and Western Medicine, 210028, China
10. Operating department, Jiangsu Medical Association, Nanjing, 210008, China
11. Diabetic Foot Centre, The National University Hospital, 119077, Singapore
12. Department of Chronic Non-Communicable Diseases, Chinese Center for Disease Control and Prevention, Beijing, 102206, China