1. Department of Infectious Diseases, San Raffaele Scientific Institute, Milano, Italy
2. University of Modena and Reggio Emilia, Department of Mother, Child and Adult Medicine and Surgical Science, Infectious Disease Clinic, Modena, Italy
3. Department of Infectious Diseases of Centro Hospitalar do Porto, Porto, Portugal
4. Unit of Infectious Diseases, Department of Medical Sciences, University of Torino, Torino, Italy
5. Department of Infectious and Tropical Diseases, University of Brescia, Brescia, Italy
6. Department of Infectious Diseases, Azienda Ospedaliero-Universitaria di Perugia, Perugia, Italy
7. 1st Division of Infectious Diseases Unit, University of Milano, Ospedale L. Sacco, Milano, Italy
8. Unit of Infectious Diseases, ‘Divisione A’, Ospedale Amedeo di Savoia, ASLTO2, Torino, Italy
9. Unit of Infectious Diseases, Department of Internal Medicine, Azienda Ospedaliero-Universitaria di Padova, Padova, Italy
10. Department of Clinical and Molecular Biomedicine, Division of Infectious Diseases, University of Catania, ARNAS Garibaldi, Catania, Italy
11. 3rd Division of Infectious Diseases, University of Milano, Ospedale L. Sacco, Milano, Italy