1. Department of Pediatrics, University of Medicine and Pharmacy Carol Davila and National Institute for Mother and Child Health, Bucharest, Romania
2. Celiac Disease Research Center, Faculty of Medicine and Health Technology, Tampere University, Tampere, Finland
3. Department of Internal Medicine, Tampere University Hospital, Tampere, 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, Seinäjoki, Finland