1. Department of Orthopedics, Kyoto Prefectural University of Medicine, Kamigyo, Kyoto 602-8566, Japan
2. Department of Immunology, Kyoto Prefectural University of Medicine, Kamigyo, Kyoto 602-8566, Japan
3. Department of Orthopedics, Japanese Red Cross Society Kyoto Daini Hospital, Kyoto 602-8026, Japan
4. Department of Plastic and Reconstructive Surgery, Kyoto Prefectural University of Medicine, Kamigyo, Kyoto 602-8566, Japan