[1] Natl Def Med Coll, Dept Psychiat Nursing, Div Nursing, Tokorozawa, Saitama, Japan
[2] Natl Def Med Coll, Dept Psychiat, 3-2 Namiki, Tokorozawa, Saitama 3598513, Japan
[3] Univ Tsukuba, Dept Disaster Psychiat, Fac Med, Ibaraki, Japan
[4] Ibaraki Prefectural Med Ctr Psychiat, Kasama, Ibaraki, Japan
[5] Natl Def Med Coll, Natl Def Med Coll Res Inst, Div Behav Sci, Tokorozawa, Saitama, Japan
[6] Yokohama City Univ, Sch Med, Dept Biostat, Yokohama, Kanagawa, Japan
[7] Japan Depress Ctr, Rokubancho Mental Clin, Tokyo, Japan
[8] Juntendo Univ, Grad Sch Med, Dept Publ Hlth, Tokyo, Japan