1. Department of Anatomy, Jeonbuk National University Medical School, Jeonju, Korea
2. Department of Anatomy, Division of Basic Medicine, Tokai University School of Medicine, Isehara, Japan
3. Division of Internal Medicine, Cupid Clinic, Iwamizawa, Japan
4. Department of Anatomy and Embryology, School of Medicine, Complutense University, Madrid, Spain
5. Department of Anatomy, Akita University School of Medicine, Akita, Japan