1. Department of Basic Physical Therapy; Sapporo Medical University School of Health Science; Sapporo Japan
2. Department of Anatomy; Chonbuk National University Medical School; Jeonju Korea
3. Department of Anatomy; Akita University School of Medicine; Akita Japan
4. Department of Surgery and Research Institute of Clinical Medicine; Chonbuk National University Hospital; Jeonju Korea
5. Department of Anatomy and Embryology II, Faculty of Medicine; Complutense University; Madrid Spain
6. Division of Internal Medicine; Iwamizawa Kojin-kai Hospital; Iwamizawa Japan