1. Department of Neurology Wonkwang University School of Medicine and Hospital, Institute of Wonkwang Medical Science Iksan Republic of Korea
2. Department of Otolaryngology—Head and Neck Surgery Tohoku University Graduate School of Medicine Sendai Japan
3. Department of Anatomy Jeonbuk National University Medical School Jeonju Republic of Korea
4. Department of Anatomy, Division of Basic Medical Science Tokai University School of Medicine Tokyo Japan
5. Department of Histology and Embryology Tokyo Dental College Tokyo Japan
6. Division of Internal Medicine Cupid Clinic Iwamizawa Japan
7. Department of Anatomy and Embryology, School of Medicine Complutense University Madrid Spain