1 Unit of Microbiology and Diagnostic Immunology, Department of Diagnostic and Laboratory Medicine, Bambino Gesù Children's Hospital, IRCCS, Rome, Italy.
2 Department of Biomedical Sciences, Humanitas University, Milan, Italy; IRCSS Humanitas Research Hospital, Milan, Italy.
3 Health Directorate, Bambino Gesù Children's Hospital, IRCCS, Rome, Italy.
5 General Pediatrics Unit, Pediatric Emergency and General Pediatrics Department, Bambino Gesù Children's Hospital, IRCCS, Rome, Italy.
6 Unit of Microbiology and Diagnostic Immunology, Department of Diagnostic and Laboratory Medicine, Bambino Gesù Children's Hospital, IRCCS, Rome, Italy. Electronic address: carlofederico.perno@opbg.net.