The National Children's Study: how obstetricians can contribute.
Grobman
William A
WA
Phipps
Maureen G
MG
D002648:Child; D002669:Child Welfare; D005260:Female; D006266:Health Education; D006801:Humans; D009316:National Institutes of Health (U.S.); D009774:Obstetrics; D011247:Pregnancy; D011256:Pregnancy Outcome; D014481:United States