[1] Dokkyo Med Univ, Sch Med, Dept Psychiat, Mibu, Tochigi, Japan
[2] Japanese Soc Clin Neuropsychopharmacol, Tokyo, Japan
[3] Japanese Assoc Neuropsychiat Clin, Tokyo, Japan
[4] Kansai Med Univ, Dept Neuropsychiat, Osaka, Japan
[5] St Marianna Univ, Sch Med, Dept Neuropsychiat, Kawasaki, Kanagawa, Japan
[6] Keio Univ, Sch Med, Dept Neuropsychiat, Tokyo, Japan
[7] Kyorin Univ, Sch Med, Dept Neuropsychiat, Tokyo, Japan
[8] Univ Occupat & Environm Hlth, Dept Psychiat, Fukuoka, Japan