Makil Shah, Zia Ul Islam, Javed Iqbal, Muhammad Jafar, Mansour Ullah 2023. Comparative Study of Glyceryl Trinitrate (GTN) Ointment Versus Lateral Internal Sphincterotomy in Management of Chronic Anal Fissure. Pakistan Journal of Medical & Health Sciences. 16, 12 (Feb. 2023), 496. DOI:https://doi.org/10.53350/pjmhs20221612496.