James Reddoch, an analyst Friedman, Billings, Ramsey, used prescription data from NDC Health to forecast the performance of biotech companies that he covers.

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Last October, an independent evaluation of the NDC scheme by researchers from Sheffield Hallam University identified a number of "teething difficulties".

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Mr Mahama, from the National Democratic Congress (NDC) party, was Ghana's vice-president until the unexpected death of President John Atta Mills in July catapulted him into office.

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For example, it directs agencies to align their declassification activities with the priorities established by the NDC and strengthens the standards agencies must meet to exempt any record from automatic declassification at 25 years.

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