1. Infectious Diseases Unit, Sanremo Hospital , Imperia , Italy ;
2. Infectious Diseases Unit, Department of Internal Medicine, Ospedale Policlinico S. Martino , Genoa , Italy ;
3. Centre for Clinical Research, Epidemiology, Modelling and Evaluation (CREME), Institute for Global Health UCL ,
Rowland Hill St
, London , UK ;
4. Centre of Excellence for Biomedical Research, University of Genoa , Genoa , Italy ;
5. Department of Internal Medicine (DIMI), University of Genoa ,
Ospedale Policlinico San Martino
, Genoa , Italy ;
6. Infectious Diseases Unit, Sapienza University , Latina , Italy ;
7. National Institute for Infectious Diseases (INMI) L. Spallanzani - IRCCS , Rome , Italy ;
8. Clinic of Infectious Diseases, Azienda O.U. Ospedali Riuniti di Ancona , Ancona , Italy ;
9. Clinica Malattie Infettive, Hospital and University of Ferrara , Ferrara , Italy ;
10. Clinica di Malattie Infettive, San Paolo Hospital, University of Milan , Milan , Italy