title: Ectopic pregnancies during use of low-dose progestogens for oral contraception.
mesh_terms: D003276:Contraceptives, Oral; D005260:Female; D005387:Finland; D006801:Humans; D008234:Lynestrenol; D009640:Norethindrone; D009644:Norgestrel; D011247:Pregnancy; D011271:Pregnancy, Ectopic / Q000139:chemically induced* / Q000453:epidemiology; D011372:Progestins
chemical_list: D003276:Contraceptives, Oral; D011372:Progestins; D009644:Norgestrel; D008234:Lynestrenol; D009640:Norethindrone