1 Institute for Maternal and Child Health IRCCS "Burlo Garofolo", via dell'Istria 65/1, 34137 Trieste, Italy. Electronic address: matteo.bramuzzo@burlo.trieste.it.
2 Department of Translational Medical Science, Section of Pediatrics, University of Naples Federico II, 80131 Naples, Italy.
3 Pediatric Gastroenterology Unit, Maggiore "CA Pizzardi" Hospital Bologna, L.go Bartolo Nigrisoli, 2, 40133 Bologna, Italy.
4 Gastroenterology and Nutrition Unit, Meyer Children's Hospital IRCCS, Viale Gaetano Pieraccini, 24, 50139, Florence, Italy; Department of NEUROFARBA, University of Florence, Florence, Italy.
5 Department of Medicine, Surgery and Dentistry "Scuola Medica Salernitana", Pediatrics Section, University of Salerno, 84081, Baronissi, Italy.
6 Sapienza University of Rome, Umberto I Hospital, Rome, Italy.
7 Bambino Gesù Children Hospital IRCCS, Rome, Italy.
8 IRCCS Istituto Giannina Gaslini, Genoa, Italy.
9 University Hospital of Verona, Verona, Italy.
10 University Hospital of Padova, Padua, Italy.
11 Fondazione IRCCS Ca' Grande, Ospedale Maggiore Policlinico, Milan Mara CORPINO: Ospedale Pediatrico Microcitemico A. Cao, ARNAS Brotzu, Cagliari Paola DE ANGELIS: Bambino Gesù Children Hospital IRCCS, Rome, Italy.
12 ARNAS Civico, Palermo, Italy.
13 Papa Giovanni XXIII Hospital, Bergamo, Italy.
14 Hospital of Cosenza, Cosenza, Italy.
15 Sant'Eugenio Hospital, Rome, Italy.
16 Children's Hospital 'Giovanni XXIII', University of Bari "Aldo Moro, Italy.
17 ASST Spedali Civili, Brescia, Italy.
18 Villa Sofia Cervello Hospital, Palermo, Italy.
19 S. Spirito Hospital, Pescara, Italy.
20 Meyer Children's Hospital IRCCS, Italy.
21 University of Parma, Parma, Italy.
22 Hospital 'F. Del Ponte', University of Insubria, Varese, Italy.
23 IRCCS Giannina Gaslini, Genoa, Italy.
24 Santa Maria delle Croci Hospital, Ravenna, Italy.
25 IRCCS "Casa Sollievo della Sofferenza", San Giovanni Rotondo, Italy.
26 TrevisoHospital, Treviso, Italy.
27 University Federico II of Naples, Naples, Italy.
28 Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milan, Italy.
29 Regina Margherita Children's Hospital, Turin, Italy.
30 Maggiore "CA Pizzardi" Hospital Bologna, Italy.
31 IRCCS ISMETT University of Pittsburgh, Palermo, Italy.
32 Fondazione IRCCS San Gerardo dei Tintori, Monza, Italy.