L., S., P. K. S., and U. Singh. “Retrospective Audit of Sinonasal Inverted Papilloma at a Tertiary Care Centre”. International Journal of Otorhinolaryngology and Head and Neck Surgery, vol. 3, no. 3, June 2017, pp. 517-21, doi:10.18203/issn.2454-5929.ijohns20172006.