Long-Term Outcomes of Botulinum Toxin in the Treatment of Chronic Anal Fissures: A Stepwise Approach to Managing Recurrent and Persistent Cases. - Aboelmaaty S; Cheng Ng J; Gupta A; Keshk NO; Gomaa IA; Zhang LM; Perry WRG; Rumer KK (Diseases of the colon and rectum, 2026)