Jerónimo, A., Casas Novas, A., Moreira, I., Conceição, C., Cunha, I., & Monteiro, L. (2011). Nasal obstruction in neonates: Two cases report of congenital nasal pyriform aperture stenosis. Portuguese Journal of Otorhinolaryngology and Head and Neck Surgery, 49(4), 273–279. https://doi.org/10.34631/sporl.199