IJSR International Journal of Scientific Research 2277 - 8179 Indian Society for Health and Advanced Research ijsr-10-5-35340 Original Research Paper A comparative study of tympanoplasty with or without mastoidectomy in tubotympanic type of chronic suppurative otitis media Mrinalini Raman Dr. Dr. Kameshwar Prasad Singh Dr. May 2021 10 5 01 02