Affiliation: | 1. Gastrointestinal Bleeding Unit, Department of Gastroenterology, Hospital de la Santa Creu i Sant Pau, Autonomous University, , Barcelona, Spain;2. Department of Epidemiology and Iberioamerican Cochrane Center, Hospital de la Santa Creu i Sant Pau, Autonomous University, , Barcelona, Spain;3. Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas (CIBERehd), , Barcelona, Spain;4. Department of Gastroenterology, Hospital Arnau de Vilanova, , Lleida, Spain |