腹腔镜与开腹对经腹会阴联合直肠癌根治术后病人胃肠功能恢复的影响研究
복강경여개복대경복회음연합직장암근치술후병인위장공능회복적영향연구
Study on influence of laparoscopy and laparotomy on recovery of gastrointestinal function of patients after undergoing abdominal perineal colorectal cancer resection
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