title: A study of small airways function by closing volume and density dependent flow volume curves.
mesh_terms: D000328:Adult; D001249:Asthma / Q000503:physiopathology; D003011:Closing Volume; D006801:Humans; D008173:Lung Diseases, Obstructive / Q000503:physiopathology; D008176:Lung Volume Measurements; D008297:Male; D012123:Pulmonary Ventilation; D012907:Smoking