“upper gastrointestinal bleeding”的概念、定义、翻译、参考文献-科学参考

单词	upper gastrointestinal bleeding
释义	upper gastrointestinal bleeding Encyclopedia 医学消化道出血释 upper gastrointestinal bleeding上消化道出血十二指肠悬韧带（Treitz韧带）以上的消化道出血。包括食管、胃、十二指肠、胆、胰和胃空肠吻合术后部分空肠病变的出血。
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