Under thirty in the Third World.
D000293:Adolescent; D000328:Adult; D001741:Black or African American; D000367:Age Factors; D000368:Aged; D000413:Alaska; D044383:Black People; D002170:Canada; D002648:Child; D003431:Cross-Cultural Comparison; D005260:Female; D006801:Humans; D004930:Inuit; D008297:Male; D001523:Mental Disorders / Q000453:epidemiology*; D008875:Middle Aged; D009497:Neurotic Disorders / Q000453:epidemiology; D009549:Nigeria; D012737:Sex Factors; D012920:Social Behavior Disorders / Q000453:epidemiology; D012922:Social Change; D013315:Stress, Psychological; D013548:Sweden; D013624:Taiwan