1. Division of Gastroenterology and Hepatology Department of Medicine University of California San Francisco CA
2. Center for Liver Disease and Transplantation Department of Medicine College of Physicians and Surgeons Columbia University New York NY
3. Department of Internal Medicine I Goethe University of Frankfurt Frankfurt Germany
4. European Foundation for the Study of Chronic Liver Failure Barcelona Spain
5. Faculty of Health Sciences University of Southern Denmark Odense Denmark
6. Institute for Bioengineering of Catalonia Barcelona Spain
7. GI/Liver Unit Institut de Malaties Digestives Hospital Clinic University of Barcelona Barcelona Spain