1. School of Integrated Chinese and Western Medicine, Nanjing University of Chinese Medicine, Nanjing 210023, P. R. China
2. School of Public Health, Nanjing Medical University, Nanjing 210029, P. R. China
3. Wangjing Hospital, China Academy of Chinese Medical Sciences, Beijing 100102, P. R. China
4. Jiangsu CM Clinical Innovation Center of Degenerative Bone & Joint Disease, Wuxi TCM Hospital Affiliated to Nanjing University of Chinese Medicine, Wuxi 214071, P. R. China
5. Institute of Orthopaedics of Beijing Integrative Medicine, Beijing 100061, P. R. China