IJSR International Journal of Scientific Research 2277 - 8179 Indian Society for Health and Advanced Research ijsr-12-7-51102 Original Research Paper Comparative Study Between Tympanoplasty With Cortical Mastoidectomy Versus Tympanoplasty Without Cortical Mastoidectomy In The Management Of Mucosal Variety Of Chronic Otitis Media. Kumar Raman Dr. Md Imran Khan Dr. July 2023 12 7 01 02