Kirby, Douglas. "Emerging Answers 2007: Research Findings on Programs to Reduce Teen Pregnancy and Sexually Transmitted Diseases" (PDF). Kirby, Douglas B. Laris, B.A. Rolleri, Lori A. (March 2007). "Sex and HIV Education Programs: Their Impact on Sexual Behaviors of Young People Throughout the World". Chin, Helen B. Sipe, Theresa Ann Elder, Randy Mercer, Shawna L. Chattopadhyay, Sajal K. Jacob, Verughese Wethington, Holly R.