胃充盈超声与超声内镜对老年胃癌患者术前的分期诊断探讨
위충영초성여초성내경대노년위암환자술전적분기진단탐토
Comparison of Gastric Filling Ultrasound and Endoscopic Ultrasound in the Diagnosis of Preoperatire Staging of Elderly Patient with Gastric Cancer
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