Shrestha SK, Thapa PB, Maharjan DK, Tamang TY. Effectiveness of 0.2% Glyceryl trinitrate and 0.5% Nifedipine in the Treatment of Chronic Anal Fissure. J Nepal Med Assoc [Internet]. 2017 Mar. 31 [cited 2024 May 6];56(205):149-52. Available from: http://www.jnma.com.np/jnma/index.php/jnma/article/view/2990