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Digestive Diseases and Sciences > 2009 > 54 > 8 > 1740-1745
Digestive and Liver Disease > 2008 > 40 > 1 > 3-11
Digestive Diseases and Sciences > 2009 > 54 > 8 > 1740-1745
Digestive and Liver Disease > 2008 > 40 > 1 > 3-11