The mental development of children from multiple pregnancy.
D002652:Child Behavior; D002675:Child, Preschool; D004777:Environment; D005260:Female; D006801:Humans; D007223:Infant; D007360:Intelligence; D007361:Intelligence Tests; D008297:Male; D011247:Pregnancy; D012801:Sibling Relations; D014310:Triplets; D014427:Twins