腹腔镜与十二指肠镜联合治疗老年肝外胆管结石的临床应用
복강경여십이지장경연합치료노년간외담관결석적림상응용
Study of duodenal endoscopy combined with laparoscopy in treatment of extrahepatic bile duct stone and cholecystolithiasis in old patients
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