title: IUD failures--possible mechanisms.
authors.forename: B N
authors.initials: BN
authors.lastname: Barwin
authors.forename: M
authors.initials: M
authors.lastname: Gillieson
mesh_terms: D001695:Biology; D003267:Contraception; D003268:Contraception Behavior; D003300:Copper; D003933:Diagnosis; D005069:Evaluation Studies as Topic; D005193:Family Planning Services; D005835:Genitalia; D005836:Genitalia, Female; D007109:Immunity; D007434:Intrauterine Devices; D007435:Intrauterine Devices, Copper; D007436:Intrauterine Devices, Medicated; D010827:Physiology; D014465:Ultrasonics; D014566:Urogenital System; D014599:Uterus
chemical_list: D003300:Copper
keywords: Biology; Contraception; Contraception Failure; Contraception Termination; Contraceptive Effectiveness; Contraceptive Methods; Contraceptive Mode Of Action; Contraceptive Usage; Copper; Examinations And Diagnoses; Family Planning; Genitalia; Genitalia, Female; Immunological Effects; Insertion; Iud; Iud, Copper Releasing; Iud, Hormone Releasing; Perforations; Physiology; Size; Ultrasonics; Urogenital System; Use-effectiveness; Uterine Effects; Uterus