1. Department of Orthopedics, The Second Affiliated Hospital of Nanchang University, Nanchang, Jiangxi 330006, P.R. China
2. Nursing School, Nanchang University, Nanchang, Jiangxi 330006, P.R. China
3. Department of Orthopedics, Jing An Hospital, Yichun, Jiangxi 330600, P.R. China