1. Department of Orthopaedic Surgery, The First Affiliated Hospital of Anhui Medical University, Hefei, China
2. Department of Orthopaedic Surgery, Changhai Hospital, The First Affiliated Hospital of Naval Medical University, Shanghai, China
3. Department of Orthopaedics, Shandong Provincial Hospital affiliated to Shandong First Medical University, Jinan, China
4. Department of Orthopaedic Surgery, Physical Medicine and Rehabilitation, University of Munich (LMU), Munich, Germany
5. Ortho Center Rosenheim, Rosenheim, Germany