Study on hearing ability and its relationship to noise levels in an East London factory.
D000328:Adult; D001299:Audiometry; D005525:Food-Processing Industry; D006317:Hearing Loss, Noise-Induced / Q000453:epidemiology*; D006801:Humans; D008131:London; D008875:Middle Aged; D009622:Noise; D009623:Noise, Occupational