1. Section of Gastroenterology and Hepatology, West Virginia University School of Medicine, Morgantown, West Virginia
2. Department of Gastroenterology, Hepatology and Nutrition
3. Department of Quantitative Health Sciences, Cleveland Clinic Foundation, Cleveland, Ohio
4. Section of Nutrition and Metabolic Diseases, Department of Internal Medicine, West Virginia University School of Medicine, Morgantown, West Virginia
5. Division of Gastroenterology and Hepatology, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
6. Liver Transplant Center, King Faisal Specialist Hospital & Research Center, Riyadh, Saudi Arabia.