Affiliation: | 1. Liver Research Unit, Santa Cristina University Hospital, Instituto de Investigación Sanitaria Princesa, CIBERehd, Madrid, Spain;2. Service of Pathology, Santa Cristina University Hospital, Madrid, Spain;3. Service of General and Abdominal Surgery, Santa Cristina University Hospital, Madrid, Spain;4. Statistics and Methodology Unit, Instituto de Investigación Sanitaria Princesa, Madrid, Spain;5. Gastroenterology Unit, Hospital del Tajo, Aranjuez, Spain |