This study is registered with the International Standard Randomised Controlled Trial number 34123170.

这项研究注册记录为国际标准随机对照试验，(注册)号为34123170。

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This study is registered as an International Standard Randomised Controlled Trial, number ISRCTN38354748.

此研究已登记为国际标准随机对照实验，编号为ISRCTN38354748。

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Over the past 14 months, the trial witnessed a number of twists and turns.

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Coventry City Council said it had done a number of trial runs but some of the side roads were too dangerous.

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He agreed that a further trial in a larger number of patients, comparing vitamin D with a dummy pill was warranted.

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