title: IUD and the pill: a comparative study.
authors.forename: A
authors.initials: A
authors.lastname: Bergqvist
authors.forename: G
authors.initials: G
authors.lastname: Rybo
mesh_terms: D000367:Age Factors; D003267:Contraception; D003276:Contraceptives, Oral; D019049:Developed Countries; D003933:Diagnosis; D005060:Europe; D005069:Evaluation Studies as Topic; D005193:Family Planning Services; D007434:Intrauterine Devices; D010298:Parity; D011247:Pregnancy; D012106:Research; D012153:Retention, Psychology; D012189:Retrospective Studies; D012537:Scandinavian and Nordic Countries; D013548:Sweden
chemical_list: D003276:Contraceptives, Oral
keywords: Age Factors; Contraception; Contraception Continuation; Contraception Termination; Contraceptive Methods; Developed Countries; Europe; Examinations And Diagnoses; Family Planning; Iud; Northern Europe; Oral Contraceptives; Parity; Pregnancy; Research Methodology; Retention--statistics; Retrospective Studies; Scandinavia; Studies; Sweden; Use-effectiveness