Queries that mothers of twins put to their doctors.
D001724:Birth Weight; D003376:Counseling; D005260:Female; D006801:Humans; D007231:Infant, Newborn; D007361:Intelligence Tests; D008423:Maternal Age; D001523:Mental Disorders; D011247:Pregnancy; D011272:Pregnancy, Multiple; D011584:Psychology; D012801:Sibling Relations; D013223:Statistics as Topic; D014427:Twins; D014429:Twins, Dizygotic; D014430:Twins, Monozygotic