1 Department of Internal Medicine and Gastroenterology, Protestant Hospital of Bethel Foundation, University Hospital OWL of the University of Bielefeld, Campus Bielefeld-Bethel, Bielefeld, Germany.
2 Center for Inflammation Research, Department of Anesthesia, Division of Gastroenterology, Department of Medicine, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, Massachusetts.
3 Department of General and Visceral Surgery, Protestant Hospital of Bethel Foundation, University Hospital OWL of the University of Bielefeld, Campus Bielefeld-Bethel, Bielefeld, Germany.