Khatoon, A., M. Rizvi, A. Sultan, F. Khan, M. Sharma, I. Shukla, and H. M. Khan. “Chronic Suppurative Otitis Media: A Clinico-Microbiological Menace”. International Journal of Research in Medical Sciences, vol. 3, no. 8, Jan. 2017, pp. 1932-6, doi:10.18203/2320-6012.ijrms20150303.