1. Unintended pregnancy in the United States: incidence and disparities, 2006;Finer;Contraception,2011
2. Integrating reproductive planning with primary health care: an exploration among low-income, minority women and men;Dunlop;Sex Reprod Healthc,2010
3. US Department of Health and Human Services. 2000. Healthy People 2010. http://www.healthypeople.gov/2010/. Accessed December 20, 2012.
4. Johnson K, Posner S, Curtis M, et al. Recommendations to improve preconception health and health care—United States. http://www.cdc.gov/mmwr/PDF/rr/rr5506.pdf. Accessed December 20, 2012.
5. Menstruation in girls and adolescents: using the menstrual cycle as a vital sign;Obstet Gynecol,2006