1. Department of Infectious Diseases Public Health Service Amsterdam Amsterdam The Netherlands
2. Department of Public Health Institute of Tropical Medicine Antwerp Belgium
3. Department of Internal Medicine University of Amsterdam Amsterdam The Netherlands
4. Amsterdam Institute for Infection and Immunity (AII) Amsterdam The Netherlands
5. Amsterdam Public Health Research Institute (APH) Amsterdam The Netherlands
6. Department of Work and Social Psychology Maastricht University Maastricht The Netherlands
7. Department of Clinical Sciences Institute of Tropical Medicine Antwerp Belgium
8. Department of Social Psychology University of Amsterdam Amsterdam The Netherlands
9. Department of Dermatology University of Amsterdam Amsterdam The Netherlands
10. Stichting HIV Monitoring Amsterdam The Netherlands