Miller, J F A comparison of the Dalkon Shield and Gravigard (copper 7) intra-uterine devices in Southampton. [electronic resource] - Contraception Jan 1976 - 31-45 p. digital Publication Type: Comparative Study; Journal Article ISSN: 0010-7824 Standard No.: 10.1016/0010-7824(76)90072-x doi Subjects--Topical Terms: Age FactorsCopperFemaleHumansIntrauterine Device ExpulsionIntrauterine Devices--adverse effectsParityPregnancyUterine Hemorrhage--etiology