1. Center for Infectious Disease ControlNational Institute for Public Health and the Environment (RIVM) Bilthoven The Netherlands
2. Care and Public Health Research Institute (CAPHRI), Maastricht University Medical Center (MUMC+) Maastricht The Netherlands
3. Department of Epidemiology & BiostatisticsVU University Medical Center Amsterdam The Netherlands
4. Department of Public HealthInstitute of Tropical Medicine Antwerp Belgium
5. Julius CenterUniversity Medical Center Utrecht Utrecht the Netherlands
6. Department of Sexual Health, Infectious Diseases and EnvironmentSouth Limburg Public Health Service Heerlen The Netherlands