Environmental factors in glue ear.

@article{Harvey1975EnvironmentalFI,
  title={Environmental factors in glue ear.},
  author={R{\'e}jane M. Harvey},
  journal={The Journal of laryngology and otology},
  year={1975},
  volume={89 1},
  pages={
          73-7
        }
}
A survey of school children suffering from chronic secretory otitis media over an eight-year period compares the incidence in a city area and country area and various areas within the city. A factor in the causation of the condition appears to be poor living conditions and air pollution. An increase in the incidence occurred in both areas following a winter in which there was an exceptional incidence of influenza. 
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