Govindan, S. B., and Y. Chandrashekar. “Endoscopic Exploratory Tympanotomy in Cases of Conductive Hearing Loss With Intact Tympanic Membrane: Our Experience”. International Journal of Otorhinolaryngology and Head and Neck Surgery, vol. 5, no. 6, Oct. 2019, pp. 1476-80, doi:10.18203/issn.2454-5929.ijohns20194569.