1. Department of Orthopedic Surgery, The Third Hospital of Shijiazhuang, Shijiazhuang 050011, Hebei, P.R. China
2. Department of Nursing, Hebei Province Eighth People’s Hospital, Shijiazhuang 050011, Hebei, P.R. China
3. Department of Radiology, The Third Hospital of Shijiazhuang, Shijiazhuang 050011, Hebei, P.R. China