1. [1] Healy GB. Otitis media and middle effusions. Otorhinolaryngology. Head and neck surgery. John Jacob Ballenger. 15th edn. Williams and Wilkins, 1996:1003-9.
2. [2] WHO library cataloguing-in-publication data. Chronic suppurative otitis media. Burden of illness and management options: WHO 2004.
3. [3] Poorey VK, Lyer A. Study of bacterial flora in csom and its clinical significance. Indian J Otolaryngol Head Neck Surg 2002;54(2):91-5.
4. [4] Kumar H, Seth S. Bacterial and fungal study of 100 cases of chronic suppurative otitis media. J Clin Diagn Res 2011;5:1224-7.
5. Prevalence of cholesteatoma in chronic suppurative otitis media with central perforation;Rout;Indian J Otol,2012