[1] Fukushima Med Univ, Dept Neuropsychiat, Sch Med, Fukushima 9601295, Japan
[2] Shirakawa Kosei Gen Hosp, Shirakawa, Japan
[3] Maikohama Hosp, Iwaki, Fukushima, Japan
[4] Prefectural Aizu Gen Hosp, Aizuwakamatsu, Japan
[5] Fukushima Red Cross Hosp, Fukushima, Japan
[6] Horikoshi Psychosomat Clin, Fukushima, Japan
[7] Nanko Hosp, Shirakawa, Japan