title: Depression in university students: duration, relation to calendar time, prevalence, and demographic correlates.
mesh_terms: D000293:Adolescent; D000328:Adult; D003863:Depression / Q000523:psychology*; D005260:Female; D006801:Humans; D008297:Male; D012621:Seasons; D012959:Socioeconomic Factors; D013334:Students / Q000523:psychology*