Fourteen thousand teen-age pregnancies.
D000022:Abortion, Spontaneous / Q000453:epidemiology*; D000293:Adolescent; D005260:Female; D006801:Humans; D007231:Infant, Newborn; D007234:Infant, Premature; D007743:Labor, Obstetric; D011225:Pre-Eclampsia / Q000453:epidemiology*; D011247:Pregnancy; D014481:United States