The study, the longest-running of its kind, showed the rate of hospitalized cases dropped 41 percent in the three years after the ban of workplace smoking in Pueblo, Colo.
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释义
这项研究,为同类型的耗时最长的研究,表明在科罗的普波罗禁烟令开始生效后的三年里住院率下降了41%25。
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