Willis C. Maddrey, MD, is Professor of Internal Medicine and Assistant to the President at The University of Texas Southwestern Medical Center at Dallas. Dr. Maddrey received his medical degree from The Johns Hopkins University School of Medicine in Baltimore, Maryland, and completed his residency on the Osler Medical Service of The Johns Hopkins Hospital. He was Chief Medical Resident in 1969. Additional postgraduate work includes a fellowship in liver disease with Dr. Gerald Klatskin at Yale University School of Medicine. From 1970 to 1981 Dr. Maddrey directed the liver unit at The Johns Hopkins University School of Medicine where he was Professor of Medicine and Associate Physician in Chief. From 1982 to 1990 he was Magee Professor and Chairman of the Department of Medicine at Jefferson Medical College. Dr. Maddrey has authored numerous scientific publications. He has published extensively in the areas of chronic viral hepatitis, drug-induced liver disease, alcohol-induced liver disease, liver transplantation, and primary biliary cirrhosis. He has authored numerous publications focusing on hepatitis and liver disease. He has edited or co-edited nine books including Transplantation of the Liver which is now in its third edition, and Schiff's Diseases of the Liver, now in its ninth edition. Dr. Maddrey is a member of several societies including the American Society for Clinical Investigation and the American Gastroenterological Association. He was President of the American Association for the Study of Liver Diseases in 1981. He is a Master of the American College of Physicians and served as President of the American College of Physicians in 1992-93. He is also a Fellow of the Royal College of Physicians of London, the Royal College of Physicians of Glasgow, and the Royal Australasian College of Physicians and Surgeons. Dr. Maddrey was named the Adelyn and Edmund M. Hoffman Distinguished Chair in Medical Science in 1998. Dr. Maddrey was awarded the George Stuart Outstanding Teacher Award at The Johns Hopkins University School of Medicine and the Christian R. and Mary F. Lindback Award for distinguished teaching in the clinical sciences at Jefferson Medical College in 1986. He received the Distinguished Service Citation from Wake Forest University in 1991, and was awarded the Distinguished Educator Award by the American Gastroenterological Association in 1998. He was awarded the Distinguished Service Award of the American Association for the Study of Liver Diseases in 2000.