1. Department of Gastroenterology, Hospital Clínic de Barcelona; and Centro de Investigación Biomédica en Red en Enfermedades Hepáticas y Digestivas (CIBEREHD), Institut d’Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Universitat de Barcelona, Barcelona, Spain
2. Department of Gastroenterology, Hospital del Mar, Barcelona, Spain
3. Preventive Medicine and Hospital Epidemiology Department, Hospital Clínic de Barcelona, Barcelona, Spain
4. Biochemistry Department, Hospital Clínic de Barcelona, Barcelona, Spain
5. Pathology Department, Hospital Clínic de Barcelona, Barcelona, Spain