Disease of small airways.
D000402:Airway Obstruction / Q000150:complications* / Q000175:diagnosis / Q000209:etiology / Q000473:pathology; D000403:Airway Resistance; D001991:Bronchitis / Q000150:complications; D006801:Humans; D008170:Lung Compliance; D011650:Pulmonary Alveoli / Q000502:physiology / Q000503:physiopathology; D011656:Pulmonary Emphysema / Q000150:complications; D012115:Residual Volume; D012907:Smoking / Q000150:complications; D013147:Spirometry; D013499:Surface Properties; D014109:Total Lung Capacity; D014797:Vital Capacity