1. Internal Medicine, Amsterdam UMC Location University of Amsterdam, Amsterdam, The Netherlands
2. Infectious diseases, Amsterdam Institute for Infection and Immunity, Amsterdam, The Netherlands
3. Quality of Care, Amsterdam Public Health Research Institute, Amsterdam, The Netherlands
4. Department of Infectious Diseases, Public Health Service of Amsterdam, Amsterdam, The Netherlands
5. Stichting HIV Monitoring, Amsterdam, The Netherlands
6. Department of Social Psychology, University of Amsterdam, Amsterdam, The Netherlands