title: Overtime working hours and depression: questionnaire survey using the patient health questionnaire (PHQ-9).
authors: Tomoyuki
authors: T
authors: Kawada
mesh_terms: D000375:Aging; D003863:Depression / Q000378:metabolism*; D006306:Health Surveys / Q000379:methods*; D006801:Humans; D016017:Odds Ratio; D015203:Reproducibility of Results; D012307:Risk Factors; D011795:Surveys and Questionnaires; D014940:Work Schedule Tolerance