VARSHNEY, P. M.; RAY, M. S.; NAGYAN, T.; MALHI, S. S.; THAKORE, D. H.; MODI, N. A.; GUPTA, S. Comparative study of unilateral subcutaneous internal anal sphincterotomy and 02% diltiazem local application in acute fissure in ano: a study of 40 patients over 01 year. International Surgery Journal, [S. l.], v. 8, n. 2, p. 530–535, 2021. DOI: 10.18203/2349-2902.isj20210362. Disponível em: https://www.ijsurgery.com/index.php/isj/article/view/7146. Acesso em: 20 feb. 2026.