1. Molecular Hepatology Laboratory, Massachusetts General Hospital Cancer Center, Harvard Medical School, Charlestown, MA 02129 and Department of Medicine II, University Hospital, D-79106 Freiburg, Germany
2. Molecular Hepatology Laboratory, Massachusetts General Hospital Cancer Center, Harvard Medical School, Charlestown, MA 02129
3. Genzyme Corporation, Framingham, MA 01701.
4. Department of Medicine II, University Hospital, D-79106 Freiburg, Germany
5. Molecular Hepatology Laboratory, Massachusetts General Hospital Cancer Center, Harvard Medical School, Charlestown, MA 02129 and Liver Research Center, Rhode Island Hospital, Providence, RI 02903