1. Department of Hygiene, Epidemiology and Medical Statistics, Medical School National and Kapodistrian University of Athens Athens Greece
2. 1st Department of Internal Medicine G. Gennimatas General Hospital Athens Greece
3. 3rd Department of Internal Medicine‐Infectious Diseases Unit “Korgialeneio‐Benakeio” Red Cross General Hospital Athens Greece
4. National Public Health Organization Athens Greece
5. 1st Department of Internal Medicine AHEPA University Hospital, Medical School, Aristotle University of Thessaloniki Thessaloniki Greece
6. 5th Department of Internal Medicine and Infectious Diseases Evaggelismos General Hospital Athens Greece
7. National AIDS Reference Centre of Northern Greece, Department of Microbiology, Medical School Aristotle University of Thessaloniki Thessaloniki Greece
8. 4th Department of Medicine Attikon General Hospital, Medical School, National and Kapodistrian University of Athens Athens Greece
9. 1st Department of Medicine Laikon General Hospital, Medical School, National and Kapodistrian University of Athens Athens Greece
10. Department of Internal Medicine Tzaneio General Hospital Piraeus Greece
11. HIV/AIDS Unit, A. Syngros Hospital of Dermatology and Venereology Athens Greece
12. HIV Unit, 2nd Department of Internal Medicine, Hippokration General Hospital, Medical School National and Kapodistrian University of Athens Athens Greece
13. Department of Pathophysiology, Laikon General Hospital, Medical School National and Kapodistrian University of Athens Athens Greece
14. 2nd Department of Internal Medicine Sismanogleion General Hospital Athens Greece
15. Department of Internal Medicine University Hospital of Heraklion “PAGNI”, Medical School, University of Crete Heraklion Greece
16. Department of Internal Medicine University General Hospital, Democritus University of Thrace Alexandroupolis Greece
17. Medical Affairs Gilead Sciences Hellas Athens Greece