PISI, G.; CHETTA, A. Airway clearance therapy in cystic fibrosis patients. Acta Biomedica Atenei Parmensis, Fidenza, Italy, v. 80, n. 2, p. 102–106, 2009. Disponível em: https://mattioli1885journals.com/index.php/actabiomedica/article/view/1204.. Acesso em: 27 jul. 2024.