Dr. Stefan Zeuzem holds the positions of Professor of Medicine and Chief of the Department of Medicine I, at the J.W. Goethe University Hospital, Frankfurt, Germany. His clinical areas of expertise include gastroenterology, hepatology, liver transplantation, endoscopy, gastrointestinal oncology and endocrinology. Professor Zeuzem is a member of numerous professional associations and has co-authored manuscripts, book chapters, and reviews encompassing varied aspects of internal medicine. In addition, he has been recognized with many honors and awards for his outstanding research accomplishments. His current research interests include cellular physiology, molecular biology of hepatitis viruses, viral kinetics, the role of hepatitis C in hepatocarcinogenesis, and the stratification and optimization of antiviral treatment. After receiving his medical training from Johann Wolfgang Goethe University Medical School, Frankfurt a.M., Germany; the School of Clinical Medicine, University of Cambridge, United Kingdom; and the Medical School, University of Newcastle upon Tyne, also in the United Kingdom, Professor Zeuzem competed post-doctoral fellowships in Endocrinology and Gastroenterology at the University Hospital, Frankfurt a.M., Germany. Subsequently, he completed research sabbaticals with the Department of Medicine and Clinical Biochemistry, Royal Victorian Infirmary, Newcastle upon Tyne, UK; at the Max-Planck-Institute for Biophysics, Frankfurt a.M., Germany; and at the Howard Hughes Medical Institute, Boyer Center of Molecular Medicine, Yale University Medical School, New Haven, Connecticut, USA. From 2002 to 2006 he was a full Professor of Medicine and Chairman of the Department of Internal Medicine II at Saarland University Hospital, Homburg/Saar, Germany.