PPH荷包缝合技术在超低位直肠癌保肛术中运用的临床观察(附15例报告)
PPH하포봉합기술재초저위직장암보항술중운용적림상관찰(부15례보고)
The application of PPH purse string suture in anus-retained operation for ultra-low rectal cancer: a report of 15 cases
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