Zia Ziabari SM, Rimaz S, Shafaghi A, Shakiba M, Pourkazemi Z, Karimzadeh E, 等. Blood Urea Nitrogen to Creatinine ratio in Differentiation of Upper and Lower Gastrointestinal Bleedings; a Diagnostic Accuracy Study. Arch Acad Emerg Med [网际网络]. 2019年6月10日 [见引于 2026年11月7日];7(1):e30. 载于: https://journals.sbmu.ac.ir/aaem/index.php/AAEM/article/view/400