1. Center for Research and Technology, Hellas, INAB Thessaloniki Greece
2. 1st Department of Internal Medicine, AHEPA University Hospital, Medical School Aristotle University of Thessaloniki Thessaloniki Greece
3. 3rd Department of Internal Medicine‐Infectious Diseases Unit "Korgialeneio‐Benakeio" Red Cross General Hospital Athens Greece
4. 1st Department of Medicine, Laikon General Hospital, Medical School National and Kapodistrian University of Athens Athens Greece
5. 4th Department of Medicine, Attikon General Hospital, Medical School National and Kapodistrian University of Athens Athens Greece
6. Department of Internal Medicine, University General Hospital Democritus University of Thrace Alexandroupolis Greece
7. Department of Internal Medicine and Infectious Diseases University Hospital of Patras Rio Greece