内镜套扎术和硬化疗法治疗食管静脉曲张破裂出血的比较研究
내경투찰술화경화요법치료식관정맥곡장파렬출혈적비교연구
Comparative Study of Endoscopic Variceal Ligation and Endoscopic Sclerotherapy in Treatment of Variceal Hemorrhage
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