1. Department of Orthopaedics, Orthopedic Research Institute and National Clinical Research Center for Geriatrics West China Hospital, Sichuan University Chengdu China
2. Laboratory of Stem Cell and Tissue Engineering Orthopedic Research Institute, West China Hospital, Sichuan University Chengdu China
3. Information Center of West China Hospital Sichuan University Chengdu China
4. Department of Anesthesiology West China Hospital, Sichuan University Chengdu China