1. Department of Anatomy Tokyo Dental College Tokyo Japan
2. Department of Anatomy Wuxi School of Medicine Jiangnan University Wuxi China
3. Department of Anatomy School of Medicine International University of Health and Welfare Narita Japan
4. Department of Anatomy and Embryology School of Medicine Complutense University Madrid Spain
5. Division of Internal Medicine Cupid‐Fair Clinic Iwamizawa Japan