经典与改良Ivor Lewis 手术治疗食管中下段癌的对比研究
경전여개량Ivor Lewis 수술치료식관중하단암적대비연구
Comparison of therapeutic efficacy between classic Ivor-Lewis esophagectomy and improvement Ivor-Lewis esophagectomy in the treatment of middle and lower thoracic esophageal carcinoma
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