1. Nell Hodgson Woodruff School, Department of Medicine; Emory University; Atlanta; Ga; USA
2. Department of Pathology; Emory University School of Medicine; Atlanta; Ga; USA
3. Division of Gastroenterology, Department of Medicine; Emory University School of Medicine; Atlanta; Ga; USA
4. Division of Cardiology, Department of Medicine; Emory University School of Medicine; Atlanta; Ga; USA