Lima, António Fontes, Filipa Carvalho Moreira, Ana Sousa Menezes, Catia Azevedo, Isabel Costa, Fernando Milhazes Mar, and Luís Dias. 2020. “Eustachian Tube Function Tests: Prospective Analysis of Diagnosis Accuracy”. Portuguese Journal of Otorhinolaryngology and Head and Neck Surgery 58 (1):31-36. https://doi.org/10.34631/sporl.836.