1. Department of Orthopedics, Xijing Hospital, Fourth Military Medical University, Xi'an, Shaanxi, China
2. Department of Orthopedics, The Fourth Hospital of Yulin, Yulin, Shaanxi, China
3. Department of Burn, Xijing Hospital, Fourth Military Medical University, Xi'an, Shaanxi, China
4. Department of Orthopedics, Xi'an Honghui Hospital, Xi'an, Shaanxi, P.R. China