1. Department of Gastroenterology; Complexo Hospitalario Universitario de Ourense; Ourense Spain
2. Department of Clinical Analysis; Complexo Hospitalario Universitario de Ourense; Ourense Spain
3. Research Support Unit; Complexo Hospitalario Universitario de Ourense; Ourense Spain
4. Complexo Hospitalario Universitario de Vigo; Vigo Spain
5. Donostia Hospital; Biodonostia Institute; University of the Basque Country UPV/EHU; Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas (CIBERehd); San Sebastian Spain