1. Dept. of Gastroenterology, Heidelberg University Hospital, Heidelberg
2. Section Clinical Tropical Medicine, Dept. of Infectious Diseases, Heidelberg University Hospital, Heidelberg
3. Dept. of Gastroenterology, St. Josefs Hospital, Viernheim
4. Pneumology and respiratory critical care medicine, Thoraxklinik, University of Heidelberg and German Center for Lung Research (DZL), Heidelberg (TLRC-H), Heidelberg University Hospital, Heidelberg
5. Institute of Pathology, Heidelberg University Hospital, Heidelberg