HUSSAIN, S.; AMMAR , A. S.; HAMEED, A. R.; ASLAM, I.; AFZAL, A. Comparison of outcome of botulinum toxin injection with and without glyceryl trinitrate in chronic anal fissure in terms of post operative pain and healing. Journal of the Pakistan Medical Association, [S. l.], v. 74, n. 7, p. 1245–1248, 2024. DOI: 10.47391/JPMA.9726. Disponível em: https://mail.jpma.org.pk/index.php/public_html/article/view/9726. Acesso em: 20 apr. 2026.