[1] Kitasato Univ, Fac Med, Dept Occupat Mental Hlth, Sagamihara, Kanagawa, Japan
[2] Kitasato Univ, Fac Med, Grad Sch Med Sci, Dept Prevent Med & Publ Hlth, Sagamihara, Kanagawa, Japan
[3] Mazda Motor Corp, Hlth Promot Ctr, Hiroshima, Japan
[4] Inst Sci Labour, Kanagawa, Japan
[5] McGill Univ, Dept Epidemiol, Montreal, PQ, Canada