[Aged smokers and lung function].
Chen
M
M
D000367:Age Factors; D000368:Aged; D006801:Humans; D008168:Lung / Q000502:physiology*; D008297:Male; D008450:Maximal Midexpiratory Flow Rate; D008875:Middle Aged; D012129:Respiratory Function Tests; D012907:Smoking / Q000502:physiology*