1. National Institute for Public Health and the Environment (RIVM) Centre for Infectious Disease Control Bilthoven The Netherlands
2. Division of Infectious Diseases Department of Internal Medicine Center for Infection and Immunity Amsterdam (CINIMA) Academic Medical Center (AMC) Amsterdam The Netherlands
3. STI AIDS Netherlands Amsterdam The Netherlands
4. Department of General Practices Academic Medical Centre University of Amsterdam Amsterdam The Netherlands
5. Department of Medical Microbiology Maastricht University Medical Center (MUMC) Maastricht The Netherlands
6. South Limburg Public Health Service Geleen The Netherlands
7. Julius Center University Medical Center Utrecht The Netherlands