1. Confidential HIV Testing and Condom Promotion in Africa
2. Effect of serotesting with counselling on condom use and seroconversion among HIV discordant couples in Africa.
3. Bergenstrom , A. Quan , V.M. Giang , P.N.V. Tham , L.V. Voytek , C. , et al. (2004) . Challenges and lessons learned from recruiting injecting drug users for an HIV-prevention intervention research study in northern Vietnam . Presented at the 15th International Conference on the Reduction of Drug Related Harm , Melbourne, Australia. April 20–24. Abstract 769.
4. Chu , T.V. Pham , H.T. Chong , P.S. Hoang , T.N. Ha , D.V. et al. (2004) Effect of community-based outreach on use of voluntary counselling and testing services among injection drug users . Presented at the15th International AIDS Conference , Bangkok, Thailand, July 2004. Abstract TuOrE1130 .