1. Department of Gastroenterology; Hospital Universitari Mutua Terrassa; Terrassa Spain
2. Centro de Investigación Biomédica en Red de enfermedades hepáticas y digestivas (CIBERehd); Madrid Spain
3. Department of Gastroenterology; Hospital Universitario Ramón y Cajal; Madrid Spain
4. Laboratorio de investigación en Genética de enfermedades complejas; Hospital Clínico San Carlos; IdISSC; Madrid Spain
5. Department of Gastroenterology; Hospital Clínico San Carlos; IdISSC; Madrid Spain
6. Department of Gastroenterology; Complejo Asistencial Universitario de León; León Spain
7. Department of Gastroenterology; Hospital Fundación Jiménez Díaz; Madrid Spain
8. Department of flow cytometry. CATLAB; Viladecavalls Spain
9. Department of Immunology; Hospital Universitario Ramón y Cajal; Madrid Spain