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Clinical Journal of Gastroenterology > 2017 > 10 > 2 > 137-141
Gastrointestinal emergencies > 263 - 268
Der Internist > 2008 > 49 > 12 > 1415-1420
Emergency Radiology > 2006 > 13 > 2 > 83-85
Der Internist > 2005 > 46 > 6 > 671-684