1. Department of Dermatology, Erasmus Medical Center, Rotterdam, The Netherlands
2. Laboratory of Immunogenetics, Department of Medical Microbiology and Infection Control, VU University Medical Center, Amsterdam, The Netherlands
3. Department of Dermatology, Academic Medical Centre, University of Amsterdam, Amsterdam, The Netherlands
4. STI Outpatient Clinic, Infectious Disease Cluster, Health Service Amsterdam, Amsterdam, The Netherlands
5. Center for Infection and Immunology Amsterdam (CINIMA), Academic Medical Center (AMC), University of Amsterdam, Amsterdam, The Netherlands
6. Outpatients' Centre for Infectious Venereodermatological Diseases, Vienna, Austria
7. University Hospital Birmingham Foundation NHS Trust, Birmingham, UK
8. WHO Collaborating Center for Gonorrhoea and other Sexually Transmitted Infections, National Reference Laboratory for Pathogenic Neisseria, Department of Laboratory Medicine, Microbiology, Faculty of Medicine and Health, Örebro University, Örebro, Sweden