1. Department of Biomedical and Clinical Sciences “Luigi Sacco”, University of Milan, Milan, Italy;
2. Laboratory of Clinical Microbiology, Virology and Bioemergencies, ASST Fatebenefratelli Sacco, University Hospital “Luigi Sacco”, Milan, Italy;
3. Department of Management, Economics and Industrial Engineering (DIG), Politecnico di Milano, Milan, Italy;
4. Department of Cardiology, ASST Fatebenefratelli Sacco, University Hospital “Luigi Sacco”, Milan, Italy;
5. Cardiosurgery Unit, ASST Fatebenefratelli Sacco, University Hospital “Luigi Sacco”, Milan, Italy