SHANKAR, M. N.; SELVAN, V. S.; SREEDHARAN, N. An observational study comparing the effect of sphenopalatine artery block on bleeding in endoscopic sinus surgery. International Journal of Otorhinolaryngology and Head and Neck Surgery, [S. l.], v. 3, n. 4, p. 1010–1014, 2017. DOI: 10.18203/issn.2454-5929.ijohns20174323. Disponível em: https://www.ijorl.com/index.php/ijorl/article/view/496. Acesso em: 16 nov. 2025.