Comparative Study of Flutter Device and Active Cycle of Breathing Technique in Airway Clearance in Subjects with Chronic Obstructive Pulmonary Disease. Indian Journal of Physiotherapy and Occupational Therapy - An International Journal, [S. l.], v. 14, n. 3, p. 232–238, 2020. DOI: 10.37506/ijpot.v14i3.9700. Disponível em: https://www.medicopublication.com/index.php/ijpot/article/view/9700. Acesso em: 9 may. 2026.