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| Application of Extraperitoneal Approach Permanent Sigmoid Colostomy in Laparoscopic Abdominal Perineorectomy |
| ZENG Qunzhang, HAN Lin, FANG Yicong, FANG Sujuan |
| First-author's address: Zhangzhou Affiliated Hospital of Fujian Medical University, Zhangzhou 363000, China |
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