1. HIV/STI Unit
2. Division of Infectious Diseases and HIV Medicine, University of Cape Town, South Africa
3. Clinical Trials Unit, Institute of Tropical Medicine, Antwerp, Belgium
4. European Centre for Disease Prevention and Control, Stockholm
5. National Infection Service, Public Health England, London, United Kingdom
6. WHO Collaborating Centre for Gonorrhea and Other Sexually Transmitted Infections, Department of Laboratory Medicine, Faculty of Medicine and Health, Örebro University, Örebro, Sweden