1. National Center for Disease Control and Prevention, Yerevan, Armenia;
2. Victor Babes Clinical Hospital for Infectious Diseases, Carol Davila University of Medicine and Pharmacy, Bucharest, Romania;
3. Central Research Institute of Epidemiology, Federal AIDS Centre, Moscow, Russian Federation;
4. Belgrade University Medical School, Infectious Diseases Hospital, Belgrade Serbia;
5. University of Zagreb School of Medicine, University Hospital of Infectious Diseases, Zagreb, Croatia;
6. Saint Laszlo Hospital National Center of HIV, Semmelweis University Faculty of Infectious Diseases, Budapest, Hungary;
7. Charles University Hospital in Pilsen, Pilsen, Czech Republic;
8. Belarus State Medical University, Minsk, Belarus;
9. Hospital for Infectious Diseases Medical University of Warsaw, Warsaw, Poland