1. Department of Orthopedics, General Hospital of Central Theater Command (Hankou District), Wuhan, Hubei 430000, P.R. China
2. School of Medical Sciences, Army Medical University, Chongqing 400038, P.R. China
3. Department of Hematoendocrinology, 32295 Army Hospital, Liaoyang, Liaoning 111000, P.R. China