title: Extrauterine pregnancy and contraception.
mesh_terms: D000328:Adult; D003274:Contraceptive Devices, Female / Q000009:adverse effects*; D005260:Female; D006801:Humans; D007434:Intrauterine Devices / Q000009:adverse effects*; D011247:Pregnancy; D011271:Pregnancy, Ectopic / Q000453:epidemiology / Q000209:etiology*; D013997:Time Factors