Noise exposure and hearing impairment in the shipbuilding industry.
D000328:Adult; D004430:Ear Protective Devices; D004781:Environmental Exposure; D006311:Hearing Disorders / Q000209:etiology*; D006801:Humans; D008875:Middle Aged; D009622:Noise / Q000009:adverse effects*; D009784:Occupational Diseases / Q000209:etiology*; D012767:Ships