1. STD Clinic Hôpital Saint‐Louis AP‐HP and Hôpital Saint‐Joseph Paris France
2. WHO Collaborating Centre for Gonorrhoea and other Sexually Transmitted Infections Department of Laboratory Medicine Microbiology Örebro University Hospital and Örebro University Örebro Sweden
3. Syphilis National Reference Center Hôpital Tarnier‐Cochin AP‐HP Paris France
4. 2nd Dermatological Clinic Carol Davila University Colentina Clinical Hospital Bucharest Romania
5. Department of Dermatovenereology University Medical Centre Ljubljana Ljubljana Slovenia
6. Department of Genitourinary Medicine the Royal South Hants Hospital Southampton UK