Cinar, Hamza, Cagri Akalin, Ismail Aydin, Tugrul Kesicioglu, and Sercan Buyukakincak. “High-Dose Botulinum Toxin in Chronic Anal Fissure Treatment: Short Term Results”. Annals of Medical Research 26, no. 3 (May 25, 2021): 0351–0354. Accessed May 19, 2024. http://www.annalsmedres.org/index.php/aomr/article/view/1355.