title: Melancholy in the 20th century: causes and prevention.
mesh_terms: D003863:Depression / Q000209:etiology* / Q000517:prevention & control*; D005260:Female; D006801:Humans; D007398:Interpersonal Relations; D008016:Life Change Events; D008297:Male; D011314:Preventive Health Services; D011788:Quality of Life; D012737:Sex Factors; D012931:Social Environment; D012959:Socioeconomic Factors