1. Department of Endocrinology, Diabetic Foot Center, Chongqing University Central Hospital, Chongqing Emergency Medical Center, Chongqing 400014, China
2. Department of Podiatry, National University of Hospital Singapore, 169608, Singapore
3. Keck School of Medicine of University of Southern California, Los Angeles, CA 90033, USA
4. Department of Rehabilitation, The Affiliated Hospital of Southwest Medical University, Luzhou, Sichuan 646000, China