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9by Kerr, G. R. D., Forbes, K. J., Williams, A., Pennington, T. H.Get access
Published in Epidemiology and Infection (1993)
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11by Hobson, R. P., Williams, A., Rawal, K., Pennington, T. H., Forbes, K. J.Get access
Published in Epidemiology and Infection (1995)
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12by Hobson, R. P., Williams, A., Rawal, K., Pennington, T. H., Forbes, K. J.Get access
Published in Epidemiology and Infection (1995)
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Article in Journal/Newspaper -
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