Birth order effects: not here, not now.
D001722:Birth Order; D004812:Epidemiologic Methods; D005260:Female; D006801:Humans; D008297:Male; D001523:Mental Disorders / Q000453:epidemiology*; D010287:Parent-Child Relations; D010551:Personality; D011153:Population; D011581:Psychological Tests; D012559:Schizophrenia / Q000453:epidemiology; D012649:Self Concept; D012737:Sex Factors; D012919:Social Behavior; D014481:United States