1. Department of Psychosomatic Dentistry, Graduate School of Medical and Dental Sciences Tokyo Medical and Dental University Tokyo Japan
2. Section of Geriatric Dentistry, Department of General Dentistry Fukuoka Dental College Fukuoka Japan
3. Department of Removable Partial Prosthodontics, Masticatory Function Rehabilitation, Graduate School Tokyo Medical and Dental University Tokyo Japan
4. Department of Oral and Maxillofacial Radiology Tokyo Dental College Tokyo Japan