Efficacy of anti-TNF maintenance therapy in Fistulas in Crohn’s Disease patients. In a meta-analysis it was found that TNF antagonists are effective for induction and maintenance of perianal fistula response and remission.  Efficacy of anti-TNF as induction therapy in fistulas Efficacy of anti-TNF as maintenance therapy in fistulas References: Lee, M. J., Parker, C. E., ..

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