1. Department of Frontier Health Sciences; Graduate School of Human Health Sciences; Tokyo Metropolitan University; 7-2-10 Higashiogu Arakawa-Ku Tokyo 116-8551 Japan
2. Department of Orthopaedic Surgery; Graduate School of Medical Sciences; Teikyo University; Tokyo Japan
3. Department of Functional Anatomy; Graduate School of Medical Sciences; Kanazawa University; Kanazawa Japan