[1
]ISNI 0000 0004 1757 3729, GRID grid.5395.a, Department of Clinical and Experimental Medicine, Section of Paediatrics, , University of Pisa, ; Pisa, Italy
[2
]Pediatric Unit, San Luca Hospital, Lucca, Italy
[3
]ISNI 0000000121663741, GRID grid.16563.37, Division of Pediatrics, Department of Health Sciences, Interdisciplinary Research
Center of Autoimmune Diseases (IRCAD), , University of Piemonte Orientale, ; Novara, Italy
[4
]Pediatric Unit, Division of Pulmonology, Allergy, and Immunology, AOU Policlinico-Giovanni
XXIII, Bari, Italy
[5
]ISNI 0000 0004 1757 2822, GRID grid.4708.b, Department of Mother and Child, , Hospital Luigi Sacco, University of Milano, ; Milan, Italy
[6
]ISNI 0000 0004 1757 2304, GRID grid.8404.8, Pediatric Infectious Disease Unit, Department of Health Sciences, , University of Florence, Anna Meyer Children’s University Hospital, ; Florence, Italy
[7
]GRID grid.411482.a, Gastroenterology and Digestive Endoscopy Unit and Clinical Paediatrics Unit, Department
of Paediatrics and Maternal Medicine, , University of Parma Hospital Trust, ; Parma, Italy
[8
]ISNI 0000 0001 2200 8888, GRID grid.9841.4, Department of Woman, Child and General and Specialist Surgery, , University of Campania “Luigi Vanvitelli”, ; Naples, Italy
[9
]Pediatric Primary Care, National Pediatric Health Care System, Milan, Italy
[10
]Department of Pediatrics, San Jacopo Hospital, Pistoia, Italy
[11
]Pediatric Primary Care, National Pediatric Health Care System, Novara, Italy
[12
]ISNI 0000 0004 1757 2822, GRID grid.4708.b, Pediatric Highly Intensive Care Unit, Department of Pathophysiology and Transplantation,
, Università degli Studi di Milano, ; Fondazione IRCCS Ca’ Granda Ospedale Maggiore Policlinico, Milan, Italy
[13
]ISNI 0000000121663741, GRID grid.16563.37, Division of Pediatrics, , University of Piemonte Orientale, ; Novara, Italy
[14
]Pediatric Primary Care, National Pediatric Health Care System, Caserta, Italy
[15
]ISNI 0000 0004 1762 5517, GRID grid.10776.37, Department of Sciences for Health Promotion and Mother and Child Care, Neonatal Intensive
Care Unit, AOUP, , University of Palermo, ; Palermo, Italy
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