1. GLUTEN3S Research Group, Department of Nutrition and Food Science, University of the Basque Country, 01006 Vitoria-Gasteiz, Spain
2. Laboratory of Gastroenterology and Trace Elements, Department of Laboratory Medicine, Hospital Universitario La Paz, 28046 Madrid, Spain
3. PROSAM Research Group (S69-23R), Department of Psychology and Sociology, Universidad de Zaragoza, 50009 Zaragoza, Spain
4. Department of Nutrition and Dietetics, Bradford Teaching Hospitals NHS Foundation Trust, Bradford BD9 6DA, UK
5. ADViSE Research Group, Department of Health Science, European University Miguel de Cervantes, 47012 Valladolid, Spain
6. Department of Nutrition and Obesity, Hospital Recoletas Campo Grande, 47007 Valladolid, Spain
7. Gastroenterology, Hepatology and Nutrition Unit, University Hospital San Jorge, 22004 Huesca, Spain
8. Department of Medicine, Faculty of Health and Sport Sciences, University of Zaragoza, 22002 Huesca, Spain
9. Aragon Health Research Institute (IIS Aragon), 50009 Zaragoza, Spain