1. Gastroenterology Unit, University Hospital of León, León, Spain
2. Mucosal Immunology lab, IBGM (University of Valladolid-CSIC), Valladolid, Spain
3. Gut Immunology Research Lab, Instituto de Investigación Sanitaria Princesa (IIS-IP) & Centro de Investigación Biomédica en Red de Enfermdades Hepáticas y Digestivas (CIBEREHD), Madrid, Spain
4. Celimmune, Bethesda, EE.UU
5. Institute of Biomedicina (IBIOMED), University of León, León, Spain