Epidemiology of depressive symptomatology in adolescents.
D000293:Adolescent; D000367:Age Factors; D002648:Child; D003863:Depression / Q000523:psychology*; D003866:Depressive Disorder / Q000523:psychology*; D005260:Female; D006801:Humans; D008297:Male; D000297:Psychology, Adolescent; D012923:Social Class