1. Department of Oral Rehabilitation, Division of Occlusion and Removable Prosthodontics, School of Dentistry, Health Sciences University of Hokkaido
2. Department of Integrated Dental Education, Division of Advanced Clinical Education, School of Dentistry, Health Sciences University of Hokkaido
3. Department of Geriatric Dentistry, Division of Human Biology and Pathophysiology, School of Dentistry, Health Sciences University of Hokkaido