1. Department of Nursing, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong 510515, P.R. China
2. Department of Joint Surgery, Huadu District People's Hospital, Southern Medical University, Guangzhou, Guangdong 510800, P.R. China
3. Department of Orthopedics, Zhujiang Hospital, Southern Medical University, Guangzhou, Guangdong 510282, P.R. China
4. Guizhou Provincial Key Laboratory of Pathogenesis and Drug Research on Common Chronic Diseases, Department of Physiology, School of Basic Medicine, Guizhou Medical University, Guiyang, Guizhou 550009, P.R. China