John, Mithra Sara, and N. Gopinathan Pillai. “A Comparative Study and Correlation Between Preoperative Computed Tomogram and Endoscopic Sinus Surgery in Chronic Rhinosinusitis”. International Journal of Otorhinolaryngology and Head and Neck Surgery 5, no. 6 (October 23, 2019): 1652–1655. Accessed November 16, 2025. https://www.ijorl.com/index.php/ijorl/article/view/1665.