Lung function in the elderly.
D000367:Age Factors; D000368:Aged; D000375:Aging; D000403:Airway Resistance; D006760:Hospitalization; D006801:Humans; D008168:Lung / Q000502:physiology*; D008297:Male; D008875:Middle Aged; D012129:Respiratory Function Tests; D012140:Respiratory Tract Diseases / Q000175:diagnosis; D012621:Seasons; D012907:Smoking