Letter: Screening for diseases of the lung.
D000328:Adult; D000367:Age Factors; D000402:Airway Obstruction / Q000150:complications; D001991:Bronchitis / Q000150:complications / Q000175:diagnosis*; D006801:Humans; D008017:Life Expectancy; D008875:Middle Aged; D012907:Smoking / Q000150:complications; D013147:Spirometry