1. Noriko Kamakura, Dr. Med. Sc., OTR, is a researcher at Tokyo Metropolitan Institute of Gerontology, Tokyo, Japan
2. Michiko Matsuo, OTR, Japan, is a former research assistant, Tokyo Metropolitan Institute of Gerontology, Tokyo, Japan
3. Harumi Ishii, OTR, Fumiko Mitsuboshi, OTR, and Yoriko Miura, OTR, Tokyo Metropolitan Geriatric Hospital, Tokyo, Japan