title: Progestogen-only oral contraception and ectopic gestation.
mesh_terms: D003276:Contraceptives, Oral / Q000009:adverse effects*; D005260:Female; D006801:Humans; D007434:Intrauterine Devices; D011247:Pregnancy; D011271:Pregnancy, Ectopic / Q000139:chemically induced*; D011372:Progestins / Q000009:adverse effects*; D015022:Yugoslavia
chemical_list: D003276:Contraceptives, Oral; D011372:Progestins