Birth order of children and parental report of problems.
D000293:Adolescent; D001290:Attitude; D001722:Birth Order; D002648:Child; D002653:Child Behavior Disorders / Q000175:diagnosis / Q000453:epidemiology*; D002660:Child Guidance; D002675:Child, Preschool; D005260:Female; D006801:Humans; D008297:Male; D008423:Maternal Age; D010287:Parent-Child Relations; D011581:Psychological Tests; D012017:Referral and Consultation