1. Department of Pediatrics, University Hospital Consortium Corporation Polyclinic of Bari, Pediatric Hospital Giovanni XXIII, 70124 Bari, Italy
2. Pediatric Unit, Giovanni Paolo II Hospital, ASP Catanzaro, 88046 Lamezia Terme, Italy
3. Area of Translational Research in Pediatric Specialities, Allergy Unit, Bambino Gesù Children’s Hospital, IRCCS, 00165 Rome, Italy
4. Pediatric Unit, IRCCS Azienda Ospedaliero-Universitaria di Bologna, 40138 Bologna, Italy
5. Allergy Unit, CHU de Montpellier, Université de Montpellier, 34295 Montpellier, France
6. IDESP, UMR A11, Université de Montpellier, 34093 Montpellier, France
7. Department of Woman, Child and General and Specialized Surgery, University of Campania ‘Luigi Vanvitelli’, 80129 Naples, Italy
8. Pediatrics and Neonatology Unit, Maternal and Child Department, San Giuseppe Hospital, Azienda USL Toscana Centro, 50053 Empoli, Italy
9. Pediatric Unit, Department of Surgical Sciences, Dentistry, Gynecology and Pediatrics, University of Verona, 37126 Verona, Italy