1. Department of Internal Medicine 1; J.W. Goethe-University Hospital; Frankfurt; Germany
2. Institute for Interdisciplinary Medicine; Hamburg; Germany
3. Department of Gastroenterology & Hepatology; Erasmus Medical Center; Rotterdam; The Netherlands
4. Institute of Pathology; Mannheim; Germany
5. Institute of Biostatistics and Mathematical Modelling; Faculty of Medicine; J.W. Goethe-University; Frankfurt; Germany
6. Institute of Pathology; J.W. Goethe-University Hospital; Frankfurt; Germany