1. Association between intrauterine device and PID;Burkman;Obstet Gynecol,1981
2. Type of intrauterine device and the risk of pelvic inflammatory disease;Lee;Obstet Gynecol,1983
3. The intrauterine device and pelvic inflammatory disease revisited: new results from the Women's Health Study;Lee;Obstet Gynecol,1988
4. The intrauterine device and pelvic inflammatory disease: the Women's health study reanalyzed;Kronmal;J Clin Epidemiol,1991
5. Primary tubal infertility in relation to the use of an intrauterine device;Daling;N Engl J Med,1985