DISTORTION PRODUCT OTOACOUSTIC EMISSIONS AND PURE TONE AUDIOMETRY, THE EFFECT OF MASTOID DRILLING ON THE CONTRALATERAL HEALTHY EAR. Int. Res. J. Pharm. [Internet]. 2019 May 19 [cited 2026 Jul. 17];10(5):243-6. Available from: https://irjponline.org/index.php/irjp/article/view/3340