Department of Abdominal Surgery and Transplantation;
University Hospital of Liège;
University of Liège;
4000 Liège;
Belgium;
Department of Anesthesia and Intensive Care Medicine;
University Hospital of Liège;
University of Liège;
4000 Liège;
Belgium;
Department of Hepatology and Gastroenterol-ogy;
University Hospital of Liège;
University of Liège;
4000 Liège;
Belgium;