之前从没有任何医疗实验测验过这种策略。
No other clinical trial had previously tested this strategy.
Geldmacher说这项研究证明了一个大测验是可行的，但是在实验之前确定没有任何特征表明药品家族可以引起心脏的某些问题。
Geldmacher said the study proved a large test was feasible, but noted the study was done before there was any sign that drugs in this class can cause heart problems.
我们还必须在条件可控的实验室中进行本项测验。
"We still have to test this in a controlled lab environment," he said.
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