Gelardi, Matteo, and Giorgio Ciprandi. “The Clinical Importance of the Nasal Valve”. Acta Biomedica Atenei Parmensis 90, no. 2-S (January 14, 2019): 31–33. Accessed December 26, 2024. https://mattioli1885journals.com/index.php/actabiomedica/article/view/8105.