Munjal, M.; Sethi, S.; Vohra, H.; Munjal, S.; Prabhakar, A.; Garg, S.; Pooni, N.; Gill, A. S.; Dhillon, K. The Non-Invasive Assessment of the Sphenoid Sinus: A Review. Int J Otorhinolaryngol Head Neck Surg 2020, 7, 202-206.