Risk Factors and a Predictive Scoring Model Development for Prolonged Length of Stay in Patients with Peptic Ulcer Bleeding　
ZHANG Qinglin，ZHANG Guoqiang，ZHAN Qiang，NIE He，TANG Liang
Chinese General Practice . 2021, (33): 4217 -4222 .  DOI: 10.12114/j.issn.1007-9572.2021.02.042

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