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Digestive Diseases and Sciences > 2011 > 56 > 6 > 1853-1861
Journal of Gastroenterology > 2010 > 45 > 6 > 636-645
Digestive Diseases and Sciences > 2011 > 56 > 6 > 1853-1861
Journal of Gastroenterology > 2010 > 45 > 6 > 636-645