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MANCHESTER, UNITED KINGDOM - JANUARY 20: An unidentified man uses his mobile telephone without ear piece on January 20, 2006 in Manchester, England. A longterm study has found that there is no link between mobile phone use and tumours. The study of 2,782 people in the UK showed that excessive use matched other surveys concluding the results. (Photo by Christopher Furlong/Getty Images)
MANCHESTER, UNITED KINGDOM - JANUARY 20: An unidentified man uses his mobile telephone without ear piece on January 20, 2006 in Manchester, England. A longterm study has found that there is no link between mobile phone use and tumours. The study of 2,782 people in the UK showed that excessive use matched other surveys concluding the results. (Photo by Christopher Furlong/Getty Images)

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