The American Journal of Gastroenterology: Official Publication of the National Gastroenterological Association; March 2018, Vol. 113 Issue: 3 p396-403, 8p
The American Journal of Gastroenterology: Official Publication of the National Gastroenterological Association; July 2017, Vol. 112 Issue: 7 p1135-1143, 9p
The American Journal of Gastroenterology: Official Publication of the National Gastroenterological Association; January 2017, Vol. 112 Issue: 1 p120-131, 12p