内镜下套扎术及药物治疗食管胃底静脉曲张出血的有效性及安全性综合评价
내경하투찰술급약물치료식관위저정맥곡장출혈적유효성급안전성종합평개
Evaluation of effectiveness and safety of esophageal variceal ligation combined drug for esophageal and gastric varicose bleeding