PUTHUKUDY, P. A.; FESHAN, M.; KARUTHEDATH, S. A 3 years retrospective observational study of pure tone audiometry in a tertiary railway hospital. International Journal of Otorhinolaryngology and Head and Neck Surgery, [S. l.], v. 8, n. 4, p. 348–355, 2022. DOI: 10.18203/issn.2454-5929.ijohns20220802. Disponível em: https://www.ijorl.com/index.php/ijorl/article/view/3452. Acesso em: 16 nov. 2025.