
Effects of formoterol and tiotropium bromide on mucus clearance in patients with COPD
Keywords: پاکسازی مخاط; Mucus clearance; Formoterol; Tiotropium bromideCOPD, Chronic obstructive pulmonary disease; FEV1, Forced expiratory volume in 1 s; FVC, Forced vital capacity; Kr, Krypton; RV, Residual volume; Tc, Technetium