Impact of Prior Digestive System Disease on In-Hospital Gastrointestinal Bleeding in Patients with Acute Myocardial Infarction oleh Liu Y, Wang LF, Liu LH, Yang XC, Ren ZH, Li KB, Chen ML, Wang HS, Zhong JC, Xu L, Ni ZH, Li WM, Xia K, Zhang DP, Sun H, Guo ZS, Chi YH, He JF, Zhang ZY, Jiang F