1. Department of Pathology and Laboratory Medicine, University of Pennsylvania Medical Center, Philadelphia, Pennsylvania 19104-4283;
2. Research Unit of Alcohol Diseases, Helsinki University Central Hospital, Helsinki, Finland;
3. Department of Anatomy, The University of Hong Kong, Hong Kong;
4. Department of Pathology, Harvard Medical School, Boston 02115;
5. Department of Surgery, Boston University School of Medicine, Boston, Massachusetts 02118; and
6. Department of Medicine, Weill Medical College of Cornell University and Anne Fisher Nutrition Center at Strang Cancer Prevention Center, New York, New York 10021