1. Human Anatomy Laboratory, School of Basic Medicine, Xinxiang Medical University, Xinxiang, Henan 453003, P.R. China
2. Department of Medicine, The Third Affiliated Hospital of Xinxiang Medical University, Xinxiang, Henan 453003, P.R. China
3. Department of Orthopedics, Shanghai Putuo District Central Hospital, Shanghai 200062, P.R. China