1. Department of Anatomy and Neurobiology, Kyoto Prefectural University of Medicine
2. Department of Otolaryngology-Head and Neck Surgery, Kyoto Prefectural University of Medicine
3. Department of Otolaryngology-Bronchoesophagology, Kyoto Second Red Cross Hospital
4. Ushimado Marine Institute, Graduate School of Natural Science and Technology, Okayama University
5. Faculty of Health and Medical Sciences, Kyoto Gakuen University
6. School of Health Sciences, Bukkyo University