1. Department of Rehabilitation Seirei Mikatahata General Hospital Hamamatsu Japan
2. Department of Dysphagia Rehabilitation, Division of Gerontology and Gerodontology, Graduate School of Medical and Dental Sciences Tokyo Medical and Dental University Tokyo Japan
3. Department of Dentistry Hamamatsu City Rehabilitation Hospital Hamamatsu Japan
4. Department of Rehabilitation Medicine Seirei Mikatahata General Hospital Hamamatsu Japan
5. Department of Dentistry Seirei Mikatahata General Hospital Hamamatsu Japan
6. Department of Rehabilitation Medicine Hamamatsu City Rehabilitation Hospital Hamamatsu Japan