1. Department of Orthopedics, Institute of Biomedical Science, Tokushima University Graduate School, Tokushima, Japan
2. Department of Cardiovascular Surgery, Institute of Biomedical Science, Tokushima University Graduate School, Tokushima, Japan
3. Department of Radiology, Institute of Biomedical Science, Tokushima University Graduate School, 3-18-15 Kuramoto, Tokushima 770-8503, Japan