1. Department of Clinical and Experimental Medicine, Translational Research Center for GastroIntestinal Disorders (TARGID), KU Leuven, Leuven, Belgium;
2. Department of Gastroenterology and Hepatology, University Hospitals Leuven, KU Leuven, Leuven, Belgium;
3. Department of Research and Development, Prometheus Laboratories, San Diego, CA,USA;
4. Department of Pharmaceutical and Pharmacological Sciences, Laboratory for Therapeutic and Diagnostic Antibodies, KU Leuven, Leuven, Belgium