Chou Christina, Wong Robert J, Higgins John P, Perumpail Ryan B, Ahmed Aijaz
Division of Gastroenterology and Hepatology, Stanford University School of Medicine, Stanford, CA, USA,
Dig Dis Sci. 2015 Jul;60(7):1924-7. doi: 10.1007/s10620-014-3389-7. Epub 2014 Nov 4.