Nakamura Kazutoshi, Takahashi Shunsuke, Oyama Mari, Nashimoto Mitsue, Saito Toshiko, Tsuchiya Yasuo, Yoshizawa Yoshiaki, Yamamoto Masaharu
Department of Community Preventive Medicine, Niigata University Graduate School of Medical and Dental Sciences, Chuo-ku, Niigata, Japan.
Age Ageing. 2009 Jul;38(4):478-82. doi: 10.1093/ageing/afp052. Epub 2009 Apr 30.