1. Department of Medical Sciences, Uppsala University, Uppsala/Eastern European Committee of Swedish Health Care Community, Stockholm, Sweden
2. DO Ott Institute of Obstetrics and Gynecology, RAMS
3. I Pavlov St Petersburg State Medical University, St Petersburg, Russia
4. Division of STD Prevention, Centers for Disease Control and Prevention (CDC), Atlanta, GA, USA
5. Swedish Reference Laboratory for Pathogenic Neisseria, Department of Clinical Microbiology, Örebro University Hospital, Örebro, Sweden