The Effect of Harmonica Exercise on Inspiratory Capacity, Dyspnea, Exercise Capacity and Quality of Life of Chronic Obstructive Pulmonary Disease Patients. Jurnal Respirologi Indonesia, [S. l.], v. 39, n. 1, p. 1–13, 2020. DOI: 10.36497/jri.v39i1.42. Disponível em: https://jurnalrespirologi.org/index.php/jri/article/view/42. Acesso em: 19 aug. 2025.