1. Department of Infectious Diseases and COVID‑19 Unit, Laiko General Hospital, Medical School, National and Kapodistrian University of Athens, 11527 Athens, Greece
2. Department of Renal Transplantation, Laiko General Hospital, Medical School, National and Kapodistrian University of Athens, 11527 Athens, Greece
3. Unit of Endocrinology, First Department of Internal Medicine, 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. First Pulmonology Department, Sismanogleio Hospital, Athens 15126, Greece
6. Department of Biochemistry, Sismanogleio Hospital, 15126 Athens, Greece
7. Laboratory of Clinical Virology, School of Medicine, University of Crete, Heraklion 71003, Greece
8. Department of Neurosurgery, General University Hospital of Larisa, Larisa 41221, Greece