AUTHOR=Chen Bo , Wang Yueting , Mei Zubing , Mao Chang , Liu Yicheng , Zhao Wenjun , Li Yingying , Ye Qianqian , Xu Jin , Wang Qingming TITLE=Closed trans-intersphincteric fistulotomy: a new modified sphincter-sparing technique for high transsphincteric anal fistula JOURNAL=Frontiers in Surgery VOLUME=11 YEAR=2024 URL=https://www.frontiersin.org/journals/surgery/articles/10.3389/fsurg.2024.1487245 DOI=10.3389/fsurg.2024.1487245 ISSN=2296-875X