1. Department of Orthopedics, Fifth Affiliated Hospital, Xinjiang Medical , Urumqi, Xinjiang 830011, P.R. China
2. Department of Orthopedics, Sixth Affiliated Hospital, Xinjiang Medical University, Urumqi, Xinjiang 830002, P.R. China
3. Department of Orthopedics, Tumor Hospital Affiliated to Xinjiang Medical University, Urumqi, Xinjiang 830011, P.R. China
4. Department of Maternal, Child and Adolescent Health, College of Public Health, Xinjiang Medical University, Urumqi, Xinjiang 830011, P.R. China