1. Digestive System Research Unit University Hospital Vall d'Hebron; Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas (Ciberehd); Universitat Autònoma de Barcelona Bellaterra Spain
2. Gastroenterology Department Hospital Clínic Spain Barcelona
3. University Medical Clinic, Cantonal Hospital Liestal Switzerland
4. Radiology Department University Hospital Vall d'Hebron Barcelona Spain