title: [Comparative results on two years use of Nova T and Copper T].
authors.forename: H
authors.initials: H
authors.lastname: Allonen
authors.forename: T
authors.initials: T
authors.lastname: Luukkainen
authors.forename: N C
authors.initials: NC
authors.lastname: Nielsen
authors.forename: K G
authors.initials: KG
authors.lastname: Nygren
authors.forename: T
authors.initials: T
authors.lastname: Pyorala
mesh_terms: D000367:Age Factors; D000554:Ambulatory Care Facilities; D001723:Birth Rate; D055598:Chemical Phenomena; D002621:Chemistry; D003267:Contraception; D003268:Contraception Behavior; D003300:Copper; D003695:Delivery of Health Care; D003710:Demography; D003718:Denmark; D019049:Developed Countries; D003933:Diagnosis; D005060:Europe; D005069:Evaluation Studies as Topic; D005193:Family Planning Services; D005298:Fertility; D005387:Finland; D006262:Health; D006268:Health Facilities; D006285:Health Planning; D007287:Inorganic Chemicals; D007434:Intrauterine Devices; D008670:Metals; D008796:Metrorrhagia; D010146:Pain; D010298:Parity; D010342:Patient Acceptance of Health Care; D010352:Patient Dropouts; D000292:Pelvic Inflammatory Disease; D011153:Population; D011154:Population Characteristics; D011157:Population Dynamics; D018873:Pregnancy Rate; D012106:Research; D012153:Retention, Psychology; D012537:Scandinavian and Nordic Countries; D013548:Sweden
chemical_list: D007287:Inorganic Chemicals; D008670:Metals; D003300:Copper
keywords: Acceptor Characteristics; Adnexitis; Age Factors; Comparative Studies; Contraception; Contraception Continuation; Contraception Termination; Contraceptive Effectiveness; Contraceptive Methods; Contraceptive Usage; Copper; Delivery Of Health Care; Demographic Factors; Denmark; Developed Countries; Dropouts; Europe; Examinations And Diagnoses; Family Planning; Family Planning Programs; Fertility; Fertility Measurements; Finland; Health; Health Facilities; Ingredients And Chemicals; Inorganic Chemicals; Insertion; Iud; Metals; Metrorrhagia; Northern Europe; Outpatient Clinic; Pain; Parity; Population; Population Characteristics; Population Dynamics; Pregnancy Rate; Research Methodology; Retention; Scandinavia; Size; Studies; Sweden; Use-effectiveness