[1] Saiseikai Cent Hosp, Minato Ku, Tokyo 108, Japan
[2] Kitazato Univ, Kanagawa, Japan
[3] Tohoku Univ, Grad Sch Med, Dept Internal Med, Div Mol Metab & Diabet, Sendai, Miyagi 980, Japan
[4] Keio Univ, Dept Neuropsychiat, Tokyo, Japan
[5] Showa Univ, Fujigaoka Hosp, Kanagawa, Japan
[6] Nippon Med Coll, Inst Gerontol, Dept Biochem & Cell Biol, Kanagawa, Japan
[7] Kurihama Natl Hosp, Natl Inst Alcoholism, Kanagawa, Japan