title: Failure of intrauterine contraceptives: a review.
abstract: Accidental pregnancies with intrauterine devices may in part be attributed to inappropriate patient selection, lack of insertion expertise by physicians, and downward migration of IUDs from initial placement position. Available research on these factors is reviewed and a clinical protocol using ultrasound is proposed to detect and correct malpositioned devices.
authors.forename: J D
authors.initials: JD
authors.lastname: Allingham