Peripheral airway obstruction.
D000402:Airway Obstruction / Q000503:physiopathology*; D000403:Airway Resistance; D001980:Bronchi / Q000033:anatomy & histology; D002908:Chronic Disease; D006801:Humans; D008168:Lung / Q000503:physiopathology; D008448:Maximal Expiratory Flow Rate; D011187:Posture; D011650:Pulmonary Alveoli / Q000503:physiopathology; D012119:Respiration; D012907:Smoking / Q000503:physiopathology; D014132:Trachea / Q000033:anatomy & histology