title: Density-dependence of flow-volume curves: limitations and applicability.
mesh_terms: D000403:Airway Resistance; D000818:Animals; D001249:Asthma / Q000175:diagnosis*; D001250:Asthma, Exercise-Induced / Q000175:diagnosis*; D005540:Forced Expiratory Flow Rates; D006371:Helium; D006801:Humans; D008173:Lung Diseases, Obstructive / Q000175:diagnosis*; D008448:Maximal Expiratory Flow Rate; D010100:Oxygen; D012907:Smoking
chemical_list: D006371:Helium; D010100:Oxygen