1. Comparative evaluation of intrauterine contraceptive devices;Hall;Am J Obstet Gynecol,1966
2. Intrauterine contraceptive devices, complications associated with their use;Nagel;Postgrad Med J,1983
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4. Complete and partial uterus perforation and embedding following insertion of intrauterine device;Zakin;Obstet Gynecol Survey,1981
5. The widened loop sign of Lippes loop perforation;Eisenberg;Am J Radiol,1972