Kishore, H. R., and R. P. R. “Clinico-Epidemiological Profile of Chronic Otitis Media at a Tertiary Care Hospital”. International Journal of Otorhinolaryngology and Head and Neck Surgery, vol. 6, no. 12, Nov. 2020, pp. 2222-8, doi:10.18203/issn.2454-5929.ijohns20205063.