1. Department of Medical Microbiology and Infectious Diseases, Erasmus MC, University Medical Center, 3015 CN Rotterdam, The Netherlands
2. Centre for Experimental and Molecular Medicine (CEMM), Amsterdam University Medical Centres—Location AMC, P.O. Box 22660, 1105 AZ Amsterdam, The Netherlands
3. Department of Sexual Health, Public Health Service Rotterdam, 3011 EN Rotterdam, The Netherlands
4. Department of Sexual Health, Public Health Service Gelderland-South, 4003 BW Tiel, The Netherlands
5. Department of Sexual Health, Public Health Service of the Utrecht Region, 3521 AZ Utrecht, The Netherlands