Surveillance of abortions in hospitals in the United States, 1970.
D000029:Abortion, Legal; D000032:Abortion, Therapeutic; D000293:Adolescent; D000328:Adult; D001723:Birth Rate; D005006:Ethnicity; D005191:Family Characteristics; D005260:Female; D006761:Hospitals; D006801:Humans; D007883:Legislation, Medical; D008423:Maternal Age; D011159:Population Surveillance; D011247:Pregnancy; D013223:Statistics as Topic; D014481:United States