1. Department of Neurology, Wonkwang University School of Medicine and Hospital, Institute of Wonkwang Medical Science, Iksan, Korea.
2. Department of Anatomy and Institute of Medical Sciences, Chonbuk National University Medical School, Jeonju, Korea.
3. Division of Internal Medicine, Asuka Hospital, Sapporo, Japan.
4. Department of Anatomy, Akita University School of Medicine, Akita, Japan.
5. Department of Anatomy and Human Embryology, Institute of Embryology, Faculty of Medicine, Complutense University, Madrid, Spain.