1. NAFLD Research Center, Division of Gastroenterology University of California at San Diego La Jolla California USA
2. Department of Medicine, Yong Loo Lin School of Medicine National University of Singapore Singapore
3. Division of Gastroenterology and Hepatology, Department of Medicine National University Health System Singapore
4. Liver Imaging Group, Department of Radiology University of California San Diego La Jolla California USA
5. Department of Radiology Naval Medical Center San Diego San Diego California USA
6. Division of Epidemiology, Department of Family Medicine and Public Health University of California at San Diego San Diego California USA