1. Department of Infectious Diseases‑COVID‑19 Unit, Laiko General Hospital, Medical School, National and Kapodistrian University of Athens, 11527 Athens, Greece
2. Department of Pathophysiology, Laiko General Hospital, Medical School, National and Kapodistrian University of Athens, 11527 Athens, Greece
3. Pulmonology Department, Laiko General Hospital, Medical School, National and Kapodistrian University of Athens, 11527 Athens, Greece
4. First Department of Internal Medicine, Laiko General Hospital, Medical School, National and Kapodistrian University of Athens, 11527 Athens, Greece
5. Unit of Endocrinology, First Department of Internal Medicine, Laiko General Hospital, Medical School, National and Kapodistrian University of Athens, 11527 Athens, Greece
6. Department of Biochemistry, Sismanogleio Hospital, 15126 Athens, Greece
7. Laboratory of Clinical Virology, School of Medicine, University of Crete, 71003 Heraklion, Greece
8. Department of Pulmonology, Medical School, Democritus University of Thrace, 68100 Alexandroupolis, Greece