1. Department of Medical Epidemiology and Biostatistics; Karolinska Institutet; Stockholm Sweden
2. Department of Paediatrics; Örebro University Hospital; Örebro Sweden
3. Division of Epidemiology and Public Health; School of Medicine; University of Nottingham; City Hospital; Nottingham UK
4. Department of Medicine; Celiac Disease Center; Columbia University College of Physicians and Surgeons; New York City New York
5. Division of Clinical Epidemiology; Karolinska Institutet; Stockholm Sweden
6. Department of Internal Medicine; Danderyd Hospital; Stockholm Sweden
7. Department of Epidemiology; Harvard T.H. Chan School of Public Health; Boston Massachusetts
8. Department of Health & Behavior Studies; Program in Nutrition; Teachers College; Columbia University; New York City New York
9. Department of Health Management and Health Economy; Institute of Health and Society; University of Oslo; Oslo Norway
10. Centre for Clinical Research; Vårdcentralen Värmlands Nysäter; Värmlands Nysäter Sweden