1. Use of contraception in the United States: 1982-2008;Mosher,2010
2. Contraceptive methods women have ever used: United States, 1982-2010;Daniels,2013
3. Disparities in rates of unintended pregnancy in the United States, 1994 and 2001;Finer;Perspect Sex Reprod Health,2006
4. Shifts in unintended pregnancies in the United States, 2001-2008;Finer;Am J Public Health,2014
5. Births: Final data for 2010;Martin,2012