1. Basic Medical College, Chengdu University of Traditional Chinese Medicine, Chengdu, Sichuan 610075, P.R. China
2. People's Hospital of Shifang, Deyang, Sichuan 618400, P.R. China
3. Orthopaedics Department of Traditional Chinese Medicine, The Third Affiliated Hospital, Southern Medical University, Guangzhou, Guangdong 510000, P.R. China