Martins Sousa, M., Coutinho, G. , Silveira, H., Vales, F. and Santos, M. 2021. Ortner Syndrome: a rare cause of dysphonia. Portuguese Journal of Otorhinolaryngology and Head and Neck Surgery. 59, 4 (Dec. 2021), 407–410. DOI:https://doi.org/10.34631/sporl.939.