1 Wellcome Sanger Institute, Wellcome Genome Campus, Hinxton, UK.
2 Translational Gastroenterology Unit, University of Oxford, Oxford, UK.
3 Dr. von Hauner Children's Hospital, Department of Pediatrics, University Hospital, Ludwig Maximilians University, Munich, Germany.
4 Great Ormond Street Hospital, London, UK.
5 Blizard Institute, Barts and the London School of Medicine, Queen Mary University of London, London, UK.
6 The Royal London Children's Hospital, Barts Health NHS Trust, London, UK.
7 Universitätsklinikum, Ulm, Germany.
8 Department of Paediatrics, University of Oxford, Oxford, UK.
9 Royal Hospital for Children, Glasgow, UK.
10 Alder Hey Children's Hospital, Liverpool, UK.
11 Addenbrooke's Hospital, Cambridge, UK.
12 Department of Paediatrics, Gastroenterology and Nutrition, Jagiellonian University Medical College, Krakow, Poland.
13 Division of Gastroenterology and Nutrition and Children's Research Center, University Children's Hospital Zurich, Zurich, Switzerland.
14 Institute of Genetics and Molecular Medicine, University of Edinburgh, Scotland, UK.
15 IBD Research Unit, Department of Gastroenterology, Addenbrooke's Hospital, Cambridge, UK.
16 NIHR Blood and Transplant Research Unit in Donor Health and Genomics, Department of Public Health and Primary Care, University of Cambridge, Cambridge, UK.
17 INTERVAL Coordinating Centre, Department of Public Health and Primary Care, University of Cambridge, Cambridge, UK.
18 Department of Haematology, University of Cambridge, Cambridge, UK.
19 NHS Blood and Transplant - Oxford Centre, Level 2, John Radcliffe Hospital, Oxford, UK.
20 Biomedical Research Centre, Oxford - Haematology Theme, Radcliffe Department of Medicine, University of Oxford, John Radcliffe Hospital, Oxford, UK.
21 Weatherall Institute of Molecular Medicine and the Radcliffe Department of Medicine, University of Oxford, John Radcliffe Hospital, Oxford, UK.
22 National Institute of Health Research Oxford Biomedical Research Centre, Surgical Innovation and Evaluation and Molecular Diagnostics Themes, University of Oxford, Oxford, UK.
23 Department of Biochemistry and Pediatrics, Faculty of Medicine, University of Toronto, Toronto, ON, Canada.
24 SickKids Inflammatory Bowel Disease Centre and Cell Biology Program, Research Institute, Hospital for Sick Children, Toronto, ON, Canada.
25 Division of Gastroenterology, Hepatology and Nutrition, Boston Children's Hospital, Boston, MA, USA.
26 Harvard Medical School, Boston, MA, USA.
27 Division of Gastroenterology, Brigham and Women's Hospital, Boston, MA, USA.
28 Child Life and Health, University of Edinburgh, Edinburgh, UK.
29 Translational Gastroenterology Unit, University of Oxford, Oxford, UK. holm.uhlig@ndm.ox.ac.uk.
30 Department of Paediatrics, University of Oxford, Oxford, UK. holm.uhlig@ndm.ox.ac.uk.
31 Wellcome Sanger Institute, Wellcome Genome Campus, Hinxton, UK. carl.anderson@sanger.com.