1. Risk factors for intrauterine device failure: a review;Thonneau;Contraception,2001
2. Intrauterine devices: mechanisms of action, safety and efficacy;Mishell;Contraception,1998
3. Ministry of Health and Medical Education—Bureau of Population and Family Health, Population and Health in the Islamic Republic of Iran-DHS, October 2000 Tehran: the Ministry of Health and Medical education and the United Nations Children's Fund (UNICEF); 2000. p. 64.
4. Reproductive factors of ovarian and endometrial cancer risk in a high fertility population in Mexico;Salazar-Martinez;Cancer Res,1999
5. Should collared CuT intrauterine devices be replaced before eight years?;Sivin;Br J Fam Plann,1992