1. Department of Orthopedics, Yangzhou Hospital of Traditional Chinese Medicine, Clinical Traditional Chinese Medical College of Yangzhou University, Hanjiang, Yangzhou 225012, P.R. China
2. Department of Orthopedics, 72nd Group Military Hospital, Wuxing, Huzhou, Zhejiang 313000, P.R. China
3. Department of Orthopedics, Subei People's Hospital of Jiangsu Province, Clinical Medical College of Yangzhou University, Hanjiang, Yangzhou 225001, P.R. China