Utrecht University - Department of Pediatric Gastroenterology, Utrecht University - Department of Pediatric Gastroenterology, Utrecht University - Department of Pediatric Gastroenterology, Utrecht University - Department of Pediatric Gastroenterology, Utrecht University - Department of Pathobiology, Utrecht University - Department of Pediatric Gastroenterology, Utrecht University - Department of Pediatric Gastroenterology, University of Amsterdam - Department of Experimental Immunology, Utrecht University - Department of Pediatric Gastroenterology, Utrecht University - Department of Pediatric Gastroenterology, Utrecht University - Department of Pediatric Gastroenterology, Utrecht University - Department of Pediatric Gastroenterology, Utrecht University - Department of Pediatric Gastroenterology, Utrecht University - Department of Pediatric Gastroenterology, Princess Máxima Center for Pediatric Oncology, Utrecht University - Department of Pediatric Gastroenterology, Utrecht University - Epigenomics Facility, University of Amsterdam - Department of Experimental Immunology, Utrecht University - Department of Pediatric Gastroenterology, University Medical Center, Utrecht - Hubrecht Institute, Utrecht University - Department of Pediatric Gastroenterology and Utrecht University - Department of Pediatric Gastroenterology