1. Department of Sports Medical Center, Hiroshima University Hospital, Hiroshima 734-8551, Japan
2. Department of Orthopaedic Surgery, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima 734-8551, Japan
3. Department of Sports Rehabilitation, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima 734-8553, Japan
4. Department of Rehabilitation Medicine, Hiroshima University Hospital, Hiroshima 734-8551, Japan