Laxamana, J. Q., Gutierrez, R. L. C. and Claridad, R. C. (2013) “Giant Ossifying Fibroma of the Frontoethmoid Sinus: A Silent Peril”, Philippine Journal of Otolaryngology Head and Neck Surgery, 28(2), pp. 22–25. doi: 10.32412/pjohns.v28i2.479.