Leads from the MMWR. Teenage pregnancy and fertility trends--United States, 1974 and 1980.
D000293:Adolescent; D000328:Adult; D005260:Female; D005298:Fertility; D006293:Health Promotion; D006801:Humans; D011247:Pregnancy; D011253:Pregnancy in Adolescence; D013997:Time Factors; D014481:United States