1. Department of Gastroenterology, Hepatology and Endocrinology; Hannover Medical School; Hannover Germany
2. Centre for Interdisciplinary Addiction Research; University of Hamburg; Hamburg Germany
3. Private Practice; Berlin Germany
4. Center of Gastroenterology; Herne Germany
5. Infektiologikum; Frankfurt Germany
6. Practice of Hepatology; Magdeburg Germany
7. Practice Center Kaiserdamm; Berlin Germany
8. Center for Interdisciplinary Medicine (CIM); Muenster Germany
9. e.factum-GmbH; Butzbach Germany
10. Roche Pharma AG; Grenzach-Wyhlen Germany