1. Department of Orthopedics, Institute of Biomedical Sciences, Tokushima University Graduate School, Tokushima, Japan
2. Department of Orthopedics, Tokushima Municipal Kaifu Hospital, Tokushima, Japan
3. Department of Cardiovascular Surgery, Tokushima Prefectural Central Hospital, Tokushima, Japan
4. Department of Pathology, Tokushima Prefectural Central Hospital, Tokushima, Japan
5. Department of Radiology, Institute of Biomedical Sciences, Tokushima University Graduate School, Tokushima, Japan