1 Pediatric Unit, IRCCS Azienda Ospedaliero-Universitaria di Bologna, Bologna, Italy.
2 Academic Department of Pediatrics (DPUO), Research Unit of Clinical Immunology and Vaccinology, Bambino Gesù Children's Hospital, Istituto di Ricovero e Cura a Carattere Scientifico (IRCCS), Rome, Italy.
3 PhD Program in Immunology, Molecular Medicine and Applied Biotechnology, University of Rome Tor Vergata, Rome, Italy.
4 Specialty School of Paediatrics, University of Bologna, Bologna, Italy.
5 Infectious Diseases Unit, Department of Medical and Surgical Sciences, IRCCS, Azienda Ospedaliero-Universitaria di Bologna, Alma Mater Studiorum, University of Bologna, Bologna, Italy.
6 Paediatric Emergency Unit, Scientific Institute for Research and Healthcare (IRCCS) Azienda Ospedaliero-Universitaria di Bologna, Bologna, Italy.
7 Academic Department of Pediatrics (DPUO), Immune and Infectious Diseases Division, Research Unit of Primary Immunodeficiencies, Bambino Gesù Children's Hospital, Istituto di Ricovero e Cura a Carattere Scientifico (IRCCS), Rome, Italy.
8 Pediatric Hematology-Oncology, Institute for Maternal and Child Health IRCCS "Burlo Garofolo", Trieste, Italy.
9 San Raffaele Telethon Institute for Gene Therapy (SR-Tiget) and Pediatric Immunohematology and Bone Marrow Transplantation Unit, IRCCS San Raffaele Scientific Institute, Milan, Italy.
10 Vita-Salute San Raffaele University, Milan, Italy.
11 Department of Systems Medicine, Chair of Pediatrics, University of Rome "Tor Vergata", Rome, Italy.