1. Department of Orthopaedic Surgery, Takamatsu Red Cross Hospital
2. Department of Orthopaedics, the Institute of Health Biosciences, the University of Tokushima
3. Department of Orthopaedic Surgery, Jikei University Kashiwa Hospital
4. Department of Orthopaedic Surgery, Tokushima Municipal Hospital
5. Department of Orthopaedic Surgery, Teikyo University Mizonokuchi Hospital