1. Clarunis, University Center for Gastrointestinal and Liver Disease, St. Clara Hospital and University Hospital Basel, Spitalstrasse 21, CH-4031 Basel, Switzerland
2. Institute of Pathology, University Hospital Basel, Schönbeinstrasse 40, CH-4056 Basel, Switzerland
3. Department of Radiology and Nuclear Medicine, University Hospital Basel, Petersgraben 4, CH-4031 Basel, Switzerland
4. Transplantationimmunology and Nephrology, University Hospital Basel, Petersgraben 4, CH-4031 Basel, Switzerland