1. Department of Radiology, University of Pennsylvania, 3400 Spruce Street, 1 Silverstein, Philadelphia, Pennsylvania 19104, United States
2. Department of Bioengineering, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States
3. Division of Gastroenterology and Hepatology, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States
4. Department of Systems Pharmacology and Translational Therapeutics, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States