1. Santa Maria Misericordia Hospital and University of UdineUdine Italy
2. Institute of Infectious Diseases, Università Cattolica del Sacro CuoreFondazione Policlinico Universitario Agostino GemelliRome Italy
3. Department of Health SciencesUniversity of GenoaGenoa Italy
4. Institute of Microbiology, Università Cattolica del Sacro CuoreFondazione Policlinico Universitario Agostino GemelliRome Italy