Muqtadir, F. and S., R. 2017. A study of hearing improvement gained after tympanoplasty using various methods in cases of CSOM. International Journal of Otorhinolaryngology and Head and Neck Surgery. 4, 1 (Dec. 2017), 107–111. DOI:https://doi.org/10.18203/issn.2454-5929.ijohns20174682.