1. Department of Anatomy and Institute of Medical Sciences, Chonbuk National University Medical School, Jeonju, Korea.
2. Department of Anatomy, Wuxi Medical School, Jiangnan University, Wuxi, China.
3. Division of Internal Medicine, Sapporo Asuka Hospital, Sapporo, Japan.
4. Department of Anatomy and Human Embryology, Institute of Embryology, Faculty of Medicine, Complutense University, Madrid, Spain.