Mo1014 Lack of Accuracy of GI Bleeding ICD-9 Codes May Cause Unreliable Results in Epidemiological Database Studiesdoi:10.1016/S0016-5085(12)62196-9Rosenman, MarcZhao, MingfangYang, HuiyingDatto, CatherineLaine, Loren A.Elsevier Inc.Gastroenterology...