Kim MW, Chang SH, Choi IS. Granular cell tumor that originated in a posterior ethmoid sinus. Int J Otorhinolaryngol Head Neck Surg [Internet]. 2017 Jun. 24 [cited 2025 Nov. 16];3(3):721-4. Available from: https://www.ijorl.com/index.php/ijorl/article/view/342