1. Department of Radiology Stanford University Palo Alto California USA
2. Department of Radiology University of California San Diego La Jolla California USA
3. Division of Gastroenterology, Department of Medicine University of California San Diego La Jolla California USA
4. Division of Epidemiology, Department of Family Medicine and Preventive Medicine University of California San Diego La Jolla California USA
5. NAFLD Research Center, Department of Medicine University of California San Diego La Jolla California USA