PATIL, A.; KHAIRNAR, P. A cross sectional study to assess effects of mastoid drill on hearing levels in chronic suppurative otitis media cases in a tertiary care hospital in northern Maharashtra. International Journal of Otorhinolaryngology and Head and Neck Surgery, [S. l.], v. 3, n. 2, p. 264–267, 2017. DOI: 10.18203/issn.2454-5929.ijohns20170930. Disponível em: https://www.ijorl.com/index.php/ijorl/article/view/345. Acesso em: 23 oct. 2025.