1. Healthy People 2020: Family Planning Objectives;Office of Disease Prevention and Health Promotion,2018
2. Contraception;Centers for Disease Control and Prevention,2017
3. U.S. medical eligibility criteria for contraceptive use, 2016;Curtis;MMWR Recomm Rep,2016
4. Declines in unintended pregnancy in the United States, 2008–2011;Finer;N Engl J Med,2016
5. Handbook of indicators for family planning program evaluation;Bertrand,1994