1. Orthopedics Department, The First Affiliated Hospital of Zhejiang Chinese Medical University (Zhejiang Provincial Hospital of Chinese Medicine), Hangzhou, Zhejiang 310000, P.R. China
2. The First Clinical Medical College, Zhejiang Chinese Medical University, Hangzhou, Zhejiang 310000, P.R. China
3. Second Department of Orthopaedics, Haining People's Hospital, Haining, Zhejiang 314400, P.R. China
4. Orthopedic Spine Department, Affiliated Hospital of Shandong University of Traditional Chinese Medicine, Jinan, Shandong 250000, P.R. China