Emmanuel Mas, Ilse Broekaert, Erasmo Miele, Christos Tzivinikos, Jernej Dolinsek, Carmen Ribes-Koninckx, Marc A. Benninga, Corina Pienar, Rut Anne Thomassen, Nikhil Thapar, Rok Orel, Mike Thomson, Victor Babeş University of Medicine and Pharmacy (UMFT), Emma Children’s Hospital Academic Medical Centre, University Hospital of Cologne, University medical centre Maribor (UKC Maribor), 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), Università degli studi di Napoli Federico II, University Medical Centre Ljubljana [Ljubljana, Slovenia] (UMCL), Hospital Universitario y Politécnico La Fe, Oslo University Hospital [Oslo], NHS Foundation Trust, Al Jalila Children's Specialty Hospital, UCL Great Ormond Street Institute of Child Health [London, UK], Great Ormond Street Hospital, Partenaires INRAE, Queensland Children's Hospital, Pienar, Corina, Benninga, Marc A, Broekaert, Ilse J, Dolinsek, Jernej, Mas, Emmanuel, Miele, Erasmo, Orel, Rok, Ribes-Koninckx, Carmen, Thomassen, Rut-Anne, Thomson, Mike, Tzivinikos, Christo, Thapar, Nikhil, Paediatric Gastroenterology, AGEM - Digestive immunity, AGEM - Re-generation and cancer of the digestive system, Amsterdam Reproduction & Development (AR&D), ProdInra, Migration, University of Naples Federico II = Università degli studi di Napoli Federico II, and Hospital Universitari i Politècnic La Fe = University and Polytechnic Hospital La Fe