Devaraj, A. R. P., Prasad, K. C., Karunasagar, A., Pappanacherry, M. J., Gowda, H. N., Nair, S. S. and Subramani, B. H. (2019) “Implication of osteoplastic flap for frontal sinus surgery in the endoscopic era”, International Journal of Otorhinolaryngology and Head and Neck Surgery, 5(6), pp. 1717–1722. doi: 10.18203/issn.2454-5929.ijohns20194958.