1. Department of Anatomy, Wuxi School of Medicine, Jiangnan University, Wuxi, China.
2. Department of Neurology, Wonkwang University School of Medicine and Hospital, Institute of Wonkwang Medical Science, Iksan, Korea.
3. Department of Maxillofacial Anatomy, Graduate School of Tokyo Medical and Dental University, Tokyo, Japan.
4. Department of Anatomy, Tokyo Dental College, Tokyo, Japan.
5. Sapporo Asuka Hospital, Sapporo, Japan.
6. Department of Anatomy and Human Embryology, Institute of Embryology, Complutense University, Madrid, Spain.