1. Okinawa Chuzan Clinical Research Center, Chuzan Hospital, Okinawa, Japan
2. Department of Geriatric Medicine, National Center for Geriatrics and Gerontology, Aichi, Japan
3. Department of Palliative and Supportive Medicine, Graduate School of Medicine, Aichi Medical University, Aichi, Japan
4. Department of Rehabilitation Medicine, Chuzan Hospital, Okinawa, Japan
5. Department of Nutrition, Hamamatsu City Rehabilitation Hospital, Shizuoka, Japan
6. Department of Speech Language Pathology and Audiology, Faculty of Rehabilitation, Kawasaki University of Medical Welfare, Kurashiki, Japan
7. Department of Nursing Care, Nishinomiya Kyoritsu Neurosurgical Hospital, Nishinomiya, Japan
8. Biostatistics Center, Kurume University, Asahimachi, Kurume, Japan
9. Department of Physical Therapy, Niigata University of Health and Welfare, Niigata, Japan