ZHANG, Weihua; MEHTA, Ashish. The historical perspective on pursed lip breathing exercises and its role in pulmonary rehabilitation programs. Medical Research Archives, [S.l.], v. 6, n. 8, aug. 2018. ISSN 2375-1924. Available at: <https://esmed.org/MRA/mra/article/view/1825>. Date accessed: 21 nov. 2024.