1. Department of Neurosurgery, General University Hospital of Larissa, 41221 Larissa, Greece
2. Department of Critical Care Medicine, General University Hospital of Larissa, 41221 Larissa, Greece
3. Department of Infectious Diseases and COVID‑19 Unit, Laiko General Hospital, Medical School, National and Kapodistrian University of Athens, 11527 Athens, Greece
4. Laboratory of Clinical Virology, School of Medicine, University of Crete, 71003 Heraklion, Greece