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