1. Department of Medicine, Division of Gastroenterology and Hepatology, Rutgers Robert Wood Johnson Medical School, New Brunswick, NJ, USA
2. Center for Liver Diseases and Masses, Rutgers Robert Wood Johnson Medical School, New Brunswick, NJ, USA
3. Veritas Health Economics Consulting, Inc, Carlsbad, CA, USA
4. Department of Biomedical Informatics, College of Medicine, The Ohio State University, Columbus, OH, USA