1. Department of Anatomy, Wuxi School of Medicine Jiangnan University Wuxi Jiangsu China
2. Department of Otolaryngology‐Head and Neck Surgery Tohoku University Graduate School of Medicine Sendai Japan
3. Department of Anatomy, Division of Basic Medicine Tokai University School of Medicine Isehara Japan
4. Division of Internal Medicine Cupid Clinic Iwamizawa Japan
5. Emeritus professor of Akita University School of Medicine Akita Japan
6. Department of Anatomy and Embryology, School of Medicine Complutense University Madrid Spain