1. The Lillian and Henry M. Stratton-Hans Popper Department of Pathology, The Mount Sinai Medical Center of the City University of New York, New York, NY
2. Division of Liver Diseases, Department of Medicine, The Mount Sinai Medical Center of the City University of New York, New York, NY
3. Division of Gastrointestinal and Liver Diseases, Department of Medicine, University of Southern California, Los Angeles, CA
4. Section of Hepatobiliary Diseases, Department of Medicine, University of Florida, Gainesville
5. Division of Liver Diseases, Division of Gastroenterology, Department of Medicine, Georgetown University Medical Center, Washington, DC
6. National Institutes of Health, Bethesda, MD