1. Department of Medical Science, Chungnam National University College of Medicine, Daejeon, 35015, Republic of Korea
2. Department of Anatomy, Brain Research Institute, Chungnam National University College of Medicine, Daejeon, 35015, Republic of Korea
3. Department of Histology & Embryology, Hai Phong University of Medicine & Pharmacy Hospital, Hai Phong, 042-12, Vietnam