Department of Gastroenterology, Hospital General de Tomelloso, Tomelloso, Spain
Dr Falk Investigational Site, Harlingen, Texas, United States
University of Leuven, Leuven, Belgium
Universitätsspital Zürich, Zürich, Switzerland
Department of Medicine, University Medical Centre, Johannes Gutenberg University Mainz, Mainz, Rheinland-Pfalz, Germany
Medical University of Vienna, Department of Internal Medicine III, Vienna, Austria
Medical School Hannover, Hannover, Lower Saxonia, Germany
Medical University of Vienna, Department of Internal Medicine III, Vienna, Austria
University of Schleswig-Holstein, Lübeck, Schleswig-Holstein, Germany
Center for Digestive Diseases Eppendorf, Hamburg, Germany
Center for Digestive Diseases Eppendorf, Hamburg, Germany
Center for Digestive Diseases Eppendorf, Hamburg, Germany