1. Clinica di Malattie Infettive, Azienda Sanitaria Universitaria Friuli Centrale (ASUFC), Presidio Ospedaliero Universitario Santa Maria della Misericordia, Piazzale Santa Maria della Misericordia 15, 33010 Udine, Italy
2. Infectious and Tropical Diseases Unit, Department of Medicine and Surgery, University of Insubria-ASST-Sette Laghi, Varese, Italy
3. Infectious Diseases Unit, Ospedale Policlinico San Martino-IRCCS, Genoa, Italy
4. Department of Health Sciences (DISSAL), University of Genoa, Genoa, Italy
5. Infectious Diseases Division, Department of Medicine, University of Udine and Azienda Sanitaria Universitaria Friuli Centrale (ASUFC), Udine, Italy