1. U.S. teenage pregnancies, births, and abortions 2008: National trends by age, race and ethnicity;Kost,2012
2. Prepregnancy contraceptive use among teens with unintended pregnancies resulting in live births—Pregnancy Risk Assessment Monitoring System (PRAMS), 2004–2008;Centers for Disease Control and Prevention;MMWR Morb Mortal Wkly Rep,2012
3. Unintended pregnancy in the United States: Incidence and disparities, 2006;Finer;Contraception,2011
4. Unlocking the contraceptive conundrum: Reducing unintended pregnancies in emergent adulthood;Jaccard,2010
5. Emerging adulthood: The winding road from late teens through the twenties;Arnett,2004