1. Örebro University Hospital; Department of Medicine, School of Medical Sciences, Faculty of Medicine and Health; Örebro Sweden
2. Centro de Investigaciones Biomédicas en Red de Enfermedades Hepáticas y Digestivas, Hospital Universitari Mutua Terrassa; Department of Gastroenterology; Barcelona Spain
3. University Research Clinic for Innovative Patient Pathways, Silkeborg Regional Hospital; Section of Gastroenterology, Diagnostic Centre; Silkeborg Denmark