1. First Department of Propedeutic and Internal Medicine, Laiko General Hospital, Medical School, National and Kapodistrian University of Athens, 11527 Athens, Greece
2. First Department of Internal Medicine, Laiko General Hospital, Medical School, National and Kapodistrian University of Athens, 11527 Athens, Greece
3. First Department of Propedeutic and Internal Medicine, Laiko General Hospital, Medical School, National and Kapodistrian University of Athens, 11527 Athens, Greece
4. Department of Infectious Diseases‑COVID‑19 Unit, Laiko General Hospital, 11527 Athens, Greece
5. Department of Infectious Diseases‑COVID‑19 Unit, Laiko General Hospital, 11527 Athens, Greece
6. Laboratory of Clinical Virology, School of Medicine, University of Crete, 71003 Heraklion, Greece
7. Renal Transplantation Unit, Laiko General Hospital, 11527 Athens, Greece
8. Department of Pathophysiology, Laiko General Hospital, 11527 Athens, Greece
9. Unit of Endocrinology, First Department of Internal Medicine, Laiko General Hospital, National and Kapodistrian University of Athens, 11527 Athens, Greece
10. Department of Thoracic Surgery, Agios Savvas, Hospital, 11522 Athens, Greece
11. Department of Cytology, Mitera Hospital, 15123 Athens, Greece
12. Department of Biochemistry, Sismanogleio Hospital, 15126 Athens, Greece