Mouth Mask versus Pursed Lip Breathing on Ventilatory Functions and Dyspnea Index in Chronic Obstructive Pulmonary Disease

Volume 88, September, September 2020, Pages 1461-1468

SOMA A.G. ABD-ELGHANY, M.Sc.; NESREEN G. ELNAHAS, Ph.D.; ZAHRA M.H. SERRY, Ph.D.; YOUSSEF M.A. SOLIMAN, M.D.

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