title: Ordinal position and psychopathology in two-child families.
mesh_terms: D000293:Adolescent; D000328:Adult; D000367:Age Factors; D001294:Attitude to Health; D001722:Birth Order; D002648:Child; D005191:Family Characteristics; D005260:Female; D006801:Humans; D008297:Male; D001523:Mental Disorders / Q000453:epidemiology / Q000209:etiology*; D008875:Middle Aged; D010287:Parent-Child Relations; D012380:Role; D012801:Sibling Relations; D012923:Social Class