1. Department of Nursing and Health Promotion, Faculty of Health Sciences, Oslo Metropolitan University, P.O. Box 4 St. Olavs Plass, 0130 Oslo, Norway
2. Det Glutenfrie Verksted, Nordseterveien 26A, 1176 Oslo, Norway
3. Department of Nutrition, Institute of Basic Medical Sciences, University of Oslo, Boks 1072 Blindern, 0316 Oslo, Norway
4. K. G. Jebsen Coeliac Disease Research Centre, University of Oslo, Boks 1072 Blindern, 0316 Oslo, Norway
5. Institute for Clinical Medicine, University of Oslo, P.O. Box 1171 Blindern, 0318 Oslo, Norway
6. Department of Gastroenterology, Oslo University Hospital, Rikshospitalet, 0424 Oslo, Norway