Leads from the MMWR. Ectopic pregnancy--United States, 1981-1983.
D000293:Adolescent; D000328:Adult; D005260:Female; D006801:Humans; D011247:Pregnancy; D011271:Pregnancy, Ectopic / Q000453:epidemiology* / Q000401:mortality; D044469:Racial Groups; D014481:United States