1. Service d'Imagerie Medicale, Hôpital Henri Mondor, Assistance Publique-Hôpitaux de Paris, Université Paris-Est, Créteil, France.
2. Department of Radiology, Medical Imaging Center Groningen, University of Groningen, University Medical Center Groningen, PO Box 30001, 9700 RB Groningen, The Netherlands.
3. Service de Chirurgie Hépato-Bilio-Pancréatique et Transplantation Hépatique, Hôpital Henri Mondor, Assistance Publique-Hôpitaux de Paris, Université Paris-Est, Créteil, France.
4. Department of Internal Medicine and Surgery, Alma Mater Studiorum, University of Bologna, S. Orsola-Malpighi Hospital, Bologna, Italy.
5. Present address: Department of Hepatobiliary and Pancreatic Surgery and Transplantation, Sheba Medical Center, Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel.
6. Centre Hépato-Biliaire, Hôpital Paul Brousse, Assistance Publique-Hôpitaux de Paris, Université Paris-Sud, Villejuif, France.