January 2007 Research Article Explaining Recent Declines in Adolescent Pregnancy in the United States: The Contribution of Abstinence and Improved Contraceptive Use John S. Santelli, Susheela Singh, Laura D. Lindberg and Lawrence B. Finer,American Journal of Public Health United StatesContraceptionPregnancyTeens
December 2006 Research Article Changes in Formal Sex Education: 1995-2002 Laura D. Lindberg, John S. Santelli and Susheela Singh,Perspectives on Sexual and Reproductive Health United StatesTeens
June 2006 Research Article Second-Trimester Abortion: Logistics and Lack of Symptoms Are Factors —P. Doskoch,Perspectives on Sexual and Reproductive Health United StatesAbortion
