Juvenile pregnancy: role of physiologic maturity.
D000293:Adolescent; D001724:Birth Weight; D002648:Child; D005260:Female; D006801:Humans; D008396:Maryland; D008423:Maternal Age; D008598:Menstruation; D011225:Pre-Eclampsia / Q000453:epidemiology; D011247:Pregnancy; D013997:Time Factors