Rayamajhi, B.B., Khadka, A., Thakali, K., Thapa, B.B., Thapa, N. and Bhandari, B.B. 2019. Evaluation of clinical effectiveness of topical 0.2% glyceryl trinitrate, topical 2% diltiazem and their combination in the treatment of chronic anal fissure. Journal of Kathmandu Medical College. 8, 3 (Sep. 2019), 156–161.