TY - JOUR T1 - Outpatient Botulinum Toxin Injection for Chronic Anal Fissure: A Single-Centre Retrospective Audit JO - Journal of Coloproctology (Rio de Janeiro) A1 - Khatri, Neeraj A1 - Pau, Samuel A1 - O'Grady, Michael A1 - Van Dalen, Ralph A1 - Fischer, Jesse SN - 2237-9363 UL - 10.1055/s-0046-1822986 VL - 46 Y1 - 2026 PB - Brasil ER -