title: Ectopic pregnancy in the United States, 1979-1980.
mesh_terms: D000293:Adolescent; D000328:Adult; D044383:Black People; D005260:Female; D006801:Humans; D007902:Length of Stay; D008423:Maternal Age; D011247:Pregnancy; D011271:Pregnancy, Ectopic / Q000453:epidemiology* / Q000401:mortality; D012306:Risk; D014481:United States; D044465:White People; D001741:Black or African American