1. Department of Anatomy and Embryology Institute of Embryology School of Medicine Complutense University Madrid Spain
2. Department of Anatomy Tokyo Dental College Tokyo Japan
3. Department of Anatomy and Institute of Medical Science Chonbuk National University Medical School Jeonju Korea
4. Department of Anatomy Wuxi Medical School Jiangnan University Wuxi China
5. Department of Otolaryngology‐Head and Neck Surgery Tohoku University Graduate School of Medicine Sendai Japan
6. Division of Internal Medicine Jikoukai Home Visits Clinic Sapporo Japan