The ARV Tanzania Study Group acknowledges the financial support provided by WHO and technical support from the University of Amsterdam. The Tanzania Food and Drugs Authority in the Ministry of Health has provided a range of support, including organizing an international workshop in Bagamoyo to develop tools for data collection and facilitating the study process through data collection, data processing, analysis and documentation. The study team also wishes to thank the institutions where members of the study group are regular employees for allowing them to participate in this study. These include: the Tanzania Food and Drugs Authority, the Ministry of Health, the Muhimbili University College of Health Sciences, the African Medical Research Foundation, the National Institute of Medical Research and the University of Dar es Salaam. In addition, the study team greatly appreciates the contribution of the managers and heads of facilities where this survey was conducted, all ARV users involved, and the respondents who took time to talk to the researchers. Without their input, this study would not have been possible. While recognizing the contribution of the many individuals who have been involved in this study, we extend special thanks to our two research assistants, Jacqueline Makupa and George Ruhago.

We would also like to thank the ARV country study group coordinators, Anita Hardon and Trudie Gerrits, of the University of Amsterdam, and Richard Laing from WHO, Geneva, for their constructive criticism during both the development of the research proposal and the writing of the report. In addition, we thank John Kinsman of the University of Amsterdam and Kathleen Hurst from WHO, Geneva, for their various comments which helped to shape this report. We are grateful to Josien de Clerk for invaluable assistance in qualitative data analysis and to Monika Zweygarth of the Medical University of South Africa for designing the database which we used for quantitative data collection. In addition, we acknowledge the contribution of Mwemezi Ngemera, Sikubwabo Ngendabanka, Anna Mia Ekstrom and Nina Viberg during the development of the research proposal. Our colleagues from Botswana, South Africa and Uganda have been very supportive and gave us useful ideas throughout the project.

Lastly, we thank our families and the families of the research assistants and of all who supported and helped us in one way or another during the project period.