AZWAN, N. A. B.; SHANMUGAM, R. K. S.; TENG, K. Y. A nearly missed foreign body in frontal sinus: case report. International Journal of Otorhinolaryngology and Head and Neck Surgery, [S. l.], v. 6, n. 2, p. 425–427, 2020. DOI: 10.18203/issn.2454-5929.ijohns20200164. Disponível em: https://www.ijorl.com/index.php/ijorl/article/view/1916. Acesso em: 21 may. 2026.