1. Mosher WD, Jones J. Use of contraception in the United States: 1982–2008, Division of Vital Statistics. Data from the National Survey of Family Growth US Department of Health and Human Services, Centers for Disease Control and Prevention, National Center for Health Statistics. Hyattsville, Maryland. August 2010. DHHS Publication No. (PHS) 2010–1981.Vital health statistics. Series 23, Number 29.
2. Disparities in rates of unintended pregnancy in the United States, 1994 and 2001;Finer;Perspect Sexual Reprod Health,2006
3. Contraceptive efficacy;Trussell,2007
4. Contraception with Norplant® implants;Sivin;Hum Reprod,1994
5. The TCU220, multiload 250 and Nova T IUDs at 3, 5 and 7 years of use. Results from three randomized multicenter trials;WHO Special Programme of Research, Development and Research Training in Human Reproduction;Contraception,1990