How smoking affects hearing.
D000367:Age Factors; D000368:Aged; D001299:Audiometry; D003217:Conductometry; D005064:Eustachian Tube / Q000503:physiopathology; D006311:Hearing Disorders / Q000209:etiology*; D006801:Humans; D008297:Male; D008875:Middle Aged; D012137:Respiratory System; D012907:Smoking / Q000150:complications*