GUPTA, M. K.; YADAV, R. The incidence of frontal cells in patients with frontal sinusitis and their association with mucosal disease by radiological studies in the indian population. International Journal of Health and Clinical Research, [S. l.], v. 4, n. 3, p. 191–194, 2021. Disponível em: https://www.ijhcr.com/index.php/ijhcr/article/view/910. Acesso em: 25 mar. 2026.