1. 1st Department of Neurology, Eginition Hospital, Medical School, National and Kapodistrian University of Athens, 11528 Athens, Greece
2. Department of Infectious Diseases‑COVID‑19 Unit, Laiko General Hospital, 11527 Athens, Greece
3. Department of Neurology, Rhodes General Hospital, 85133 Rhodes, Greece
4. Laboratory of Clinical Virology, School of Medicine, University of Crete, 71003 Heraklion, Greece
5. Department of Neurology, 251 Air Force General Hospital, 11525 Athens, Greece