But previous analysis by the BBC Shared Data Unit estimated that the defences not maintained by the EA were 45% more likely to be below target.
"Using firm contracts in uncertain situations carries significant commercial risks," says Albert Sanchez-Graells, a professor at the University of Bristol Law School who has been researching NHS contracts for more than 15 years.。im钱包官方下载对此有专业解读
An NHS England spokesman said the problem was affecting supply globally.，更多细节参见safew官方下载
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