But scientists count deaths from any cause to measure drugs, because it prevents fudging of data and takes side effects into account.

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It called for the authority to look into using other data sources to measure population figures - such as the National Insurance number register, GP lists and council tax records.

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It will also slow down the speedy return of data from an experiment to measure winds on Titan.

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Friedberg said Weatherbill could use data from microwave satellites to measure the density of clouds on a minute by minute basis, enabling it to build a long range model of rainfall around the world.

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