1. Celiac Disease Research Center, Faculty of Medicine and Life Sciences, Tampere University, Tampere, Finland
2. Department of Internal Medicine, Kanta-Häme Central Hospital, Hämeenlinna, Finland
3. Tampere Center for Child, Adolescent, and Maternal Health Research, Tampere University and Tampere University Hospital, Tampere, Finland
4. University of Helsinki and Helsinki University Hospital, Children’s Hospital, and Pediatric Research Center, Helsinki, Finland
5. Pediatric Research Institute, University of Oslo, Norway
6. Department of Gastroenterology and Alimentary Tract Surgery, Tampere University Hospital, Tampere, Finland
7. Faculty of Social Sciences, Tampere University, Tampere, Finland
8. Department of Internal Medicine, Tampere University Hospital, Tampere, Finland
9. The University Consortium of Seinäjoki, Seinäjoki, Finland