1. Department of Gastroenterology; Hospital Universitari Mutua Terrassa; Terrassa Spain
2. Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas (CIBERehd); Barcelona Spain
3. Department of Gastroenterology; Consorci Sanitari Terrassa; Barcelona Spain
4. Department of Gastroenterology; Hospital de Bellvitge; Barcelona Spain