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Continue to ChatA new minimally invasive sphincter-saving procedure to treat highly complex anal fistulas : Transanal opening of intersphincteric space (TROPIS) procedure in 238 high complex anal fistulas https://www.sages.org/meetings/annual-meeting/abstracts-archive/a-new-minimally-invasive-sphincter-saving-procedure-to-treat-highly-complex-anal-fistulas-transanal-opening-of-intersphincteric-space-tropis-procedure-in-238-high-complex-anal-fistulas/