1 Department of Biomedical and Clinical Sciences "Luigi Sacco", University of Milano, Italy; III Division of Infectious Diseases, ASST Fatebenefratelli Sacco, Luigi Sacco Hospital, Milano, Italy. Electronic address: spinello.antinori@unimi.it.
2 III Division of Infectious Diseases, ASST Fatebenefratelli Sacco, Luigi Sacco Hospital, Milano, Italy.
3 Department of Biomedical and Clinical Sciences "Luigi Sacco", University of Milano, Italy; III Division of Infectious Diseases, ASST Fatebenefratelli Sacco, Luigi Sacco Hospital, Milano, Italy.