1. Department of Anatomy Wuxi School of Medicine Jiangnan University Wuxi China
2. Division of Internal Medicine Jikoukai Clinic of Home Visit Sapporo Japan
3. Institute of Anatomy and Cell Biology School of Medicine Georg‐August‐Universität Gőttingen Gőttingen Germany
4. Department of Anatomy School of Medicine International University of Health and Welfare Narita Japan
5. Department of Anatomy and Human embryology Faculty of Medicine Complutense University Madrid Spain