4Agarwal K, Sharma U, Acharya V. Microbial and cytopathological study of intrauterine contraceptive device users[ J ]. Indian J Med Sci, 2004, 58 (9): 394-399.
5Chell KI, Lipscomb GH. Abdominal wall abscess presenting 35 years after insertion of an intrauterine contraceptive device[J].Obstet Gynecol, 2010, 115 (2Pt2) : 458-459.
6Gokce MI, S ti er E, Tangal S, et al. Squamous cell carcinoma of the bladder associated with chronic irritation related to a migrated intrauterine device [J]. Scand J Urol Nephrol, 2010, 44 (3) : 183-185.
7E1-Hefnawy AS, E1-Nahas AR, Osman Y, et al. Urinary complications of migrated intrauterine contraceptive device [J]. Int Urogynecol J Pelvic Floor Dysfunct, 2008, 19 (2) : 241-245.