1. Department of Orthopaedic Surgery, Integrated Health Sciences, Institute of Biomedical & Health Sciences; Hiroshima University; 1-2-3 Kasumi Minami-ku Hiroshima 734-8551 Japan
2. Department of Orthopaedic Surgery; Miyoshi Central Hospital; 531 Higashisakeyamachi Miyoshi Hiroshima 728-8502 Japan
3. Department of Musculoskeletal Functional Research and Regeneration, Institute of Biomedical & Health Sciences; Hiroshima University; 1-2-3 Kasumi Minami-ku Hiroshima 734-8553 Japan