1. Advisory Committee on Obstetrics and Gynecology. Report on Intrauterine Contraceptive Devices. United States Food and Drug Administration,1968
2. Contraception with intrauterine devices. 1959-1966;Tietze;Am J Obstet Gynecol,1966
3. Intrauterine devices and reproductive health: American women in feast and famine;Hubacher;Contraception,2004
4. State-of-the-art of non-hormonal methods of contraception: III. Intrauterine devices;Sivin;Eur J Contracept Reprod Health Care,2010
5. Mosher W, Jones J. Use of contraception in the United States: 1982-2008. [June 1, 2010]; Available from: http://www.cdc.gov/nchs/data/series/sr_23/sr23_029.pdf