1. Surgical Laboratory, Department of Surgery, Academic Medical Center, University of Amsterdam, Amsterdam - The Netherlands
2. Liver Transplantation Unit, Department of Surgery, Cardarelli Hospital, Naples - Italy
3. Centro di Biotecnologie A.O. Cardarelli, Naples - Italy
4. Liver Transplantation Unit, St. Eugenio Hospital, Rome - Italy
5. Virology Laboratory, D. Cotugno Hospital, Naples - Italy
6. VI Division of Infectious Diseases, D. Cotugno Hospital, Naples - Italy
7. Department of Veterinary Medicine, University of Bologna, Bologna - Italy
8. Istituto Zooprofilattico, Brescia - Italy
9. Department of Hepatology, Academic Medical Center, University of Amsterdam, Amsterdam - The Netherlands