超声内镜对直肠癌术前分期的准确性及对经肛门内镜显微手术的指导意义
초성내경대직장암술전분기적준학성급대경항문내경현미수술적지도의의
Accuracy of endoscopic ultrasound in the preoperative staging and the guidance of transanal endoscopic microsurgery for rectal cancer
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