1. Department of Clinical Medicine, Guizhou Medical University, Guiyang, Guizhou 550000, P.R. China
2. Department of Orthopedics, Guangzhou Red Cross Hospital, Guangzhou, Guangdong 510220, P.R. China
3. Department of Orthopedics, Guangzhou Institute of Traumatic Surgery, Guangzhou Red Cross Hospital, Guangzhou, Guangdong 510220, P.R. China