Islam, M.S., Islam, M.R., Bhuiyan, M.A.R., Rashid, M.S. and Datta, P.G. 2011. Pattern and degree of hearing loss in chronic suppurative otitis media. Bangladesh Journal of Otorhinolaryngology. 16, 2 (Jan. 2011), 96–105. DOI:https://doi.org/10.3329/bjo.v16i2.6844.