Alzarei, A., Assiri, M., N. B., R., Aljoraebi, W. and Sumaily, I. (2017) “Giant cell tumor of the frontal sinus: case report”, International Journal of Otorhinolaryngology and Head and Neck Surgery, 3(3), pp. 725–727. doi: 10.18203/issn.2454-5929.ijohns20173055.