Baisakhiya, N., Shukla, A., & Pandey, K. (2021). A rare combination of polyp, inverted papilloma and squamous cell carcinoma of sphenoid sinus. International Journal of Otorhinolaryngology and Head and Neck Surgery, 7(9), 1565–1568. https://doi.org/10.18203/issn.2454-5929.ijohns20213302