1. Department of Gastroenterology and Hepatology Marqués de Valdecilla University Hospital School of Medicine University of Cantabria Santander Spain
2. Marqués de Valdecilla Research Institute (IDIVAL) s/n Calle Cardenal Herrera Oria Santander Spain
3. Department of Gastroenterology and Hepatology Hospital Universitario Puerta de Hierro, Majadahonda School of Medicine Universidad Autónoma Madrid Majadahonda Spain
4. Department of Epidemiology and Computational Biology School of Medicine University of Cantabria Santander Spain
5. CIBER Epidemiología y Salud Pública (CIBERESP) IDIVAL s/n Santander Spain
6. Outcomes Research Department Chiltern International/MSD Tres Cantos Spain
7. Gastroenterology and Hepatology Servicio Medicina Digestiva del Hospital Clinico Universitario de Valencia (HUCV) Av. de Blasco Ibáñez Valencia Spain
8. Faculty of Health Sciences Rey Juan Carlos University Móstoles Spain
9. Barcelona Institute for Global Health (ISGlobal) Hospital Clínic University of Barcelona Barcelona Spain