Sheen Edward, Huang Robert J, Triadafilopoulos George
Division of Gastroenterology and Hepatology, Department of Medicine, Stanford School of Medicine, Alway Building, Room M-211, 300 Pasteur Drive, Stanford, CA, 94305, USA,
Dig Dis Sci. 2014 May;59(5):928-32. doi: 10.1007/s10620-013-2911-7. Epub 2013 Nov 2.