1. Virology Unit, Tor Vergata University Covid-Hospital, Rome, Italy
2. Unit of Medical Statistics and Molecular Epidemiology, University Campus Bio-Medico of Rome, Italy
3. Department of Experimental Medicine, University of Tor Vergata, Rome, Italy
4. Department of Laboratory Medicine, Chinese PLA General Hospital, Beijing, China
5. Emerging Technologies Division, International Federation of Clinical Chemistry and Laboratory Medicine (IFCC), Milano, Italy