1. Department of Human Pathology, Graduate School of Medicine, Kanazawa University, Kanazawa 920-8640, Japan
2. Department of Surgery, The Thomas E. Starzl Transplantation Institute, School of Medicine, University of Pittsburgh, Pittsburgh, PA 15231, USA
3. Department of Internal Medicine, Graduate School of Medicine, Tohoku University, Sendai 980-8575, Japan
4. Institute of Liver Studies, King's College Hospital, Denmark Hill, London SE5 9RS, UK