1. Vita-Salute San Raffaele University
2. Infectious Diseases, IRCCS San Raffaele Scientific Institute, Milan
3. Department of Medicine of Systems, University of Rome Tor Vergata, Rome
4. Infectious Diseases Unit, IRCCS Policlinico di Sant’Orsola, University of Bologna, Bologna
5. IRCCS Ospedale Policlinico San Martino
6. Department of Health's Sciences, University of Genoa, Genoa
7. Infectious Diseases Department, Sanremo Hospital, Sanremo
8. Ospedale dei Colli, Naples
9. Department of Infectious Diseases, ASST Grande Ospedale Metropolitano Niguarda, Milan
10. Unit of Infectious Diseases, Santa Maria Hospital, Perugia, Italy.