Adolescent pregnancy and childbearing: new data, new challenges.
D000293:Adolescent; D000328:Adult; D002668:Child Rearing; D005260:Female; D006801:Humans; D007223:Infant; D007230:Infant, Low Birth Weight; D007231:Infant, Newborn; D011247:Pregnancy; D011253:Pregnancy in Adolescence; D012959:Socioeconomic Factors; D014481:United States