title: [Ectopic pregnancy. A retrospective study over a period of 20 years].
mesh_terms: D000328:Adult; D003718:Denmark; D005260:Female; D006801:Humans; D011247:Pregnancy; D011271:Pregnancy, Ectopic / Q000453:epidemiology* / Q000209:etiology; D012189:Retrospective Studies; D012306:Risk
vernacular_title: Ekstrauterin graviditet. En 20 års retrospektiv undersøgelse.