1. Central Research Institute for Epidemiology; Moscow Russia
2. Laboratory of Microbiology; D.O. Ott Research Institute of Obstetrics, Gynaecology and Reproductology; St. Petersburg Russia
3. Department of Laboratory Medicine, Microbiology; WHO Collaborating Centre for Gonorrhoea and Other STIs; Faculty of Medicine and Health; Örebro University; Örebro Sweden