ABUBAKAR, M. Y.; LAWAL, J.; DADI, H.; GREMA, U. S. Diphtheria: a re-emerging public health challenge. International Journal of Otorhinolaryngology and Head and Neck Surgery, [S. l.], v. 6, n. 1, p. 191–193, 2019. DOI: 10.18203/issn.2454-5929.ijohns20195713. Disponível em: https://www.ijorl.com/index.php/ijorl/article/view/1811. Acesso em: 16 nov. 2025.