[1] Natl Ctr Neurol & Psychiat, Natl Inst Mental Hlth, Dept Psychosomat Res, Kodaira, Tokyo 1878553, Japan
[2] Kohnodai Hosp, Int Med Ctr Japan, Dept Body Mind Med, Ichikawa, Chiba, Japan
[3] Natl Grad Inst Policy Studies, Hlth Serv Ctr, Minato Ku, Tokyo, Japan
[4] Nogami Hosp, Dept Psychosomat Med, Kagoshima, Japan
[5] Tenri Hosp, Dept Psychosomat Med, Tenri, Nara 632, Japan
[6] Family Hosp Satsuma, Dept Psychosomat Med, Kagoshima, Japan
[7] Kyushu Univ, Grad Sch Med Sci, Dept Psychosomat Med, Fukuoka 812, Japan
[8] Univ Occupat & Environm Hlth, Dept Neurol, Div Psychosomat Med, Kitakyushu, Fukuoka 807, Japan
[9] Saitama Social Insurance Hosp, Dept Psychosomat Med, Saitama, Japan
[10] Takei Med Clin, Kagoshima, Japan
[11] Aichi Med Univ Hosp, Div Gen Med, Nagakute, Aichi, Japan
[12] Osaka City Univ, Grad Sch Med, Dept Neuropsychiat, Abeno Ku, Osaka 558, Japan
[13] Hiroshima Univ, Hlth Serv Ctr, Hiroshima, Japan
[14] Yufuin Koseinenkin Hosp, Dept Internal Med, Oita, Japan
[15] Kamibayashi Mem Hosp, Dept Psychosomat Med, Ichinomiya, Aichi, Japan
[16] Int Univ Kagoshima, Grad Sch Welf Soc, Kagoshima, Japan
[17] Azumi Gen Hosp, Dept Psychiat Ikedamachi, Nagano, Japan
[18] Tokyo Kasei Univ, Dept Nutr, Sch Home Econ & Sci, Itabashi Ku, Tokyo, Japan