Munjal, M., Puri, S., Matta, G. and Munjal, S. (2020) “The frontal sinus- physiological and pathophysiological aspects- an endoscopist’s perspective: a review”, International Journal of Otorhinolaryngology and Head and Neck Surgery, 6(10), pp. 1937–1940. doi: 10.18203/issn.2454-5929.ijohns20204208.