Enhancing the Effectiveness of HIV/AIDS Prevention Programs Targeted to Unique Population Groups in Thailand: Lessons Learned from Applying Concepts of Diffusion of Innovation and Social Marketing. Journal of Health Communication, 3: 193-216 —- Peer J. Svenkerud and Arvind Singhal (1998) —- http://utminers.utep.edu/asinghal/Articles%20and%20Chapters/JA_Svenkerud_Singhal_Enhancing_the_Effectivness_of_HIVAIDS_Prevention_Programs.pdf