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Digestive Diseases and Sciences > 2017 > 62 > 2 > 473-480
European Journal of Internal Medicine > 2011 > 22 > 6 > 621-625
Digestive Diseases and Sciences > 2017 > 62 > 2 > 473-480
European Journal of Internal Medicine > 2011 > 22 > 6 > 621-625