Meyer Children’s University Hospital - Pediatric Unit, Meyer Children’s University Hospital - Pediatric Unit, San Jacopo Hospital, San Donato Hospital, Pisa University - Pisa University Hospital, Italian Federation of Pediatricians (FIMP) - Tuscany Regional Section, San Jacopo Hospital, Santo Stefano Hospital - Pediatric and Neonatology Unit, University of Siena - Pediatric Unit, Azienda Ospedaliero-Universitaria Careggi, University of Siena - Department of Molecular and Developmental Medicine, University of Florence - Department of Statistics, Computer Science, Applications, Pisa University - Pisa University Hospital, San Donato Hospital, Santa Maria Annunziata Hospital, University of Florence - Laboratory of Immunology and Molecular Microbiology, Italian Federation of Pediatricians (FIMP) - Tuscany Regional Section, Pisa University - Pisa University Hospital, University of Siena - Department of Molecular and Developmental Medicine, University of Florence - Immunology Unit, Santa Maria Annunziata Hospital, University of Siena - Pediatric Unit, Santa Maria Annunziata Hospital, University of Siena - Pediatric Unit, University of Siena - Pediatric Unit, Santo Stefano Hospital - Pediatric and Neonatology Unit, University of Florence - Immunology Unit and University of Florence - Paediatric and Liver Unit

University of Florence - Paediatric and Liver Unit, Meyer Children’s Hospital, Meyer Children’s Hospital, Sant Joan de Deu-Barcelona Children's Hospital, Sant Joan de Deu-Barcelona Children's Hospital, Sant Joan de Deu-Barcelona Children's Hospital, Children's Health Ireland, Meyer Children’s Hospital, Anna Meyer Children’s University Hospital - Department of Health Sciences, HUS New Children's Hospital, HUS New Children's Hospital, Great Ormond Street Hospital for Children, Children's Clinical University Hospital, Erasmus MC-Sophia Children's Hospital, The Children's Memorial Health Institute, Meyer Children’s Hospital and Meyer Children’s Hospital