1. Emergency Department, Dongyang People's Hospital, Jinhua, Zhejiang 322100, P.R. China
2. Department of Neurosurgery, Zhejiang Province Taizhou Hospital, Taizhou, Zhejiang 318000, P.R. China
3. Department of Orthopaedics, 967th Hospital of The PLA Joint Logistics Support Force, Dalian, Liaoning 116021, P.R. China
4. Department of Cardiology, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang 310016, P.R. China
5. Orthopedics Department, Dongyang Chinese Medicine Hospital, Jinhua, Zhejiang 322100, P.R. China