1 Clinic of Infectious and Tropical Diseases, Department of Clinical and Experimental Medicine, University of Brescia, WHO Collaborating Centre for Tuberculosis Prevention, Brescia, Italy.
2 Department of Epidemiology and Preclinical Research, National Institute for Infectious Diseases' Lazzaro Spallanzani' (IRCCS), Rome, Italy.
3 Unit of Infectious Diseases, Department of Medical Sciences, University of Turin, Turin, Italy.
4 School of Medicine and Surgery, University of Milan, Milan, Italy.
5 Infectious Diseases Unit, Department of Mental Health and Public Medicine, University of Campania "Luigi Vanvitelli", Naples, Italy.
6 Clinic of Infectious Diseases, Department of Medicine and Surgery, University of Perugia, Perugia, Italy.
7 Infectious Disease Clinic, Policlinico Tor Vergata, Department of System Medicine, Tor Vergata University, Rome, Italy.
8 Unit of Infectious Diseases, "Bianchi-Melacrino-Morelli" Grand Metropolitan Hospital, Reggio Calabria, Italy.
9 Infectious Diseases Unit, Forlì and Cesena Hospitals, Forlì and Cesena, Italy.