食管早期癌和癌前病变超声内镜诊断及内镜下食管黏膜切除术的临床研究
식관조기암화암전병변초성내경진단급내경하식관점막절제술적림상연구
Diagnostic value of endoscopic ultrasounography and therapic value of endoscopic mucosal resection in early esophageal cancer and precancerous lesions
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