1. Department of Gastroenterology and Hepatology; Erasmus MC University Medical Center Rotterdam; Rotterdam The Netherlands
2. The Toronto Centre for Liver Disease; University Health Network; Toronto Ontario Canada
3. Department of Gastroenterology, Hepatology, and Endocrinology; Medical School Hannover; Hannover Germany
4. Hepatology, Department of Clinical research; University of Bern; Bern Switzerland
5. Department of Medicine II; Saarland University Medical Center; Homburg Germany
6. Division of Gastroenterology and Hepatology; University of Arkansas for Medical Sciences; Arkansas USA
7. Medizinische Klinik 1; Klinikum der Johann Wolfgang Goethe-Universität; Frankfurt am Main Germany