1. Department of Paediatrics The Medical University of Warsaw Warsaw Poland
2. Institute of Gastroenterology, Nutrition and Liver Disease, Schneider Children's Medical Center of Israel, School of Medicine, Faculty of Medical and Health Sciences Tel Aviv University Tel Aviv Israel
3. Department of Translational Medical Sciences and European Laboratory for the Investigation of Food Induced Diseases University Federico II Naples Italy
4. Department of Clinical Sciences, Pediatrics Umeå University Umeå Sweden
5. Department of Pediatrics University Medical Center Maribor Maribor Slovenia
6. Celiac Disease Research Center Tampere University Tampere Finland
7. Department of Pediatrics Tampere University Hospital Tampere Finland
8. Children's Hospital Helsinki University Hospital Helsinki Finland
9. Department of Paediatric Research, Faculty of Medicine University of Oslo Oslo Norway
10. Department of Pediatrics, Dr. von Hauner Children's Hospital University Hospital Munich Germany
11. Department of Pediatrics, School of Medicine Collegium Medicum, Gastroenterology and Nutrition University of Warmia and Mazury Olsztyn Poland
12. Celiac Disease Center Heim Pál National Paediatric Institute Budapest Hungary
13. Department of Paediatrics University of Debrecen Debrecen Hungary
14. Department of Pediatric Research Oslo University Hospital Oslo Norway
15. Unit of Celiac and Diabetes Research, Clinical Sciences Malmö Lund university Lund Sweden
16. Department of Pediatrics Skane University Hospital Malmö Sweden
17. Department of Paediatric Gastroenterology Leiden University Medical Center ‐ Willem Alexander Children's Hospital Leiden The Netherlands
18. Pediatric Gastroenterology, La Fe University Hospital Instituto de Investigation Sanitaria La FE Valencia Valencia Spain
19. St Luke's General Hospital University College Dublin Dublin Ireland
20. Division of Paediatric and Adolescent Medicine Oslo University Hospital Oslo Norway
21. Department of Paediatrics Rijnstate Hospital Arnhem The Netherlands