1. Faculty of Medicine and Surgery, Vita-Salute San Raffaele University
2. Infectious Diseases, IRCCS San Raffaele Scientific Institute, Milan
3. Department of Medical Sciences, Infectious and Tropical Diseases Unit, University Hospital of Siena, Siena
4. Ospedale dei Colli, Napoli
5. Unit of Infectious Diseases, AO-Universitaria, Parma
6. Department of Safety and Bioethics, Catholic University of the Sacred Heart
7. Infectious Diseases Unit, Fondazione Policlinico Universitario A. Gemelli IRCCS
8. National Institute for Infectious Diseases ‘L. Spallanzani’ IRCCS, Rome
9. Infectious Diseases Unit, Ospedale Civile di Legnano, ASST Ovest Milanese, Legnano
10. DIBIC Luigi Sacco, University of Milan, Milan
11. Department of Experimental Medicine, University of Rome ’Tor Vergata’, Rome, Italy.