Osvaldo Borrelli, Christos Tzivinikos, Corina Pienar, Carmen Ribes-Koninckx, John Williams, Kym Thorne, Ilse Broekaert, Stephen E. Roberts, Javier Martín-de-Carpi, Ann John, Emmanuel Mas, Nikhil Thapar, Marc A. Benninga, Rut Anne Thomassen, Mike Thomson, Jernej Dolinsek, Sian Morrison-Rees, Erasmo Miele, Roberts, Stephen E, Morrison-Rees, Sian, Thapar, Nikhil, Benninga, Marc A, Borrelli, Osvaldo, Broekaert, Ilse, Dolinsek, Jernej, Martin-de-Carpi, Javier, Mas, Emmanuel, Miele, Erasmo, Pienar, Corina, Ribes-Koninckx, Carmen, Thomassen, Rut A, Thomson, Mike, Tzivinikos, Christo, Thorne, Kymberley, John, Ann, Williams, John G, Swansea University, Great Ormond Street Hospital for Children [London] (GOSH), University College of London [London] (UCL), Children’s Health Queensland [Brisbane] (CHQ), University of Amsterdam [Amsterdam] (UvA), University Hospital of Cologne [Cologne], University medical centre Maribor (UKC Maribor), Institut de Recerca Pediàtrica Hospital Sant Joan de Déu [Barcelona, Spain], Institut de Recherche en Santé Digestive (IRSD ), Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Ecole Nationale Vétérinaire de Toulouse (ENVT), Institut National Polytechnique (Toulouse) (Toulouse INP), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Institut National Polytechnique (Toulouse) (Toulouse INP), Université Fédérale Toulouse Midi-Pyrénées-Institut National de la Santé et de la Recherche Médicale (INSERM)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE), 'Federico II' University of Naples Medical School, Victor Babeş University of Medicine and Pharmacy (UMFT), Hospital Universitari i Politècnic La Fe, Oslo University Hospital [Oslo], University of Sheffield [Sheffield], Al Jalila Children's Specialty Hospital, and European Society for Paediatric Gastroenterology Hepatology and Nutrition