title: A long-term follow-up study of women using different methods of contraception--an interim report.
mesh_terms: D000022:Abortion, Spontaneous / Q000209:etiology; D000328:Adult; D003267:Contraception / Q000379:methods*; D003274:Contraceptive Devices, Female / Q000009:adverse effects; D003280:Contraceptives, Oral, Synthetic / Q000009:adverse effects / Q000494:pharmacology; D004194:Disease / Q000209:etiology; D004739:England; D005260:Female; D005298:Fertility; D005313:Fetal Death / Q000209:etiology; D005500:Follow-Up Studies; D006801:Humans; D007434:Intrauterine Devices / Q000009:adverse effects; D008297:Male; D009026:Mortality; D010342:Patient Acceptance of Health Care; D011247:Pregnancy; D011271:Pregnancy, Ectopic / Q000209:etiology; D011272:Pregnancy, Multiple; D011446:Prospective Studies; D012744:Sex Ratio
chemical_list: D003280:Contraceptives, Oral, Synthetic