1. Emergency Care Department, Laiko General Hospital, 11527 Athens, Greece
2. First Department of Cardiology, Hippokration General Hospital, Medical School, National and Kapodistrian University of Athens, 11527 Athens, Greece
3. Third Department of Cardiology, Thoracic Diseases General Hospital Sotiria, Medical School, National and Kapodistrian University of Athens, 11527 Athens, Greece
4. Department of Hygiene and Epidemiology, Faculty of Medicine, University of Thessaly, 41500 Larissa, Greece
5. Renal Transplantation Unit, Laiko General Hospital, 11527 Athens, Greece
6. N.S. Christeas Laboratory of Experimental Surgery and Surgical Research, Medical School, National and Kapodistrian University of Athens, 11527 Athens, Greece
7. Public Health & Vaccines Laboratory, Department of Nursing, School of Health Science, University of Thessaly, 38221 Volos, Greece
8. First Department of Respiratory Medicine, “Sotiria” Hospital, Medical School, National and Kapodistrian University of Athens, 11527 Athens, Greece
9. Athens’s Medical Association, 11527 Athens, Greece
10. Department of Hygiene, Epidemiology and Medical Statistics, School of Medicine, National and Kapodistrian University of Athens, 11527 Athens, Greece