1. Celiac Disease Research Center, Faculty of Medicine and Health Technology Tampere University Tampere Finland
2. Department of Internal Medicine Tampere University Hospital Tampere Finland
3. Children’s Hospital, and Paediatric Research Centre University of Helsinki and Helsinki University Hospital Helsinki Finland
4. Tampere Center for Child, Adolescent and Maternal Health Research Tampere University and Tampere University Hospital Tampere Finland
5. The University Consortium of Seinäjoki and Seinäjoki Central Hospital Seinäjoki Finland