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To find the reason why a drill might bring on a racing heart, Karibe divided the volunteers into low fear and high fear groups based on how much they feared a trip to the dentist.

为了找出钻头可能导致心跳加速的原因，Karibe 根据志愿者对看牙医的恐惧程度，将他们分为低恐惧组和高恐惧组。

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These urge doctors first to check cholesterol levels, and then to divide patients into groups based on their heart risk. Doctors were given different LDL cholesterol targets for each.

这就要求医生首先要检查胆固醇水平，然后按照心脏病风险将患者划分为几组，然后分别给予不同的低密度脂蛋白胆固醇指标。

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During a conference call this afternoon, Merck executives argued that the data should make it difficult to link Vioxx to heart attacks based on the period after patients have stopped taking it.

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To do a psychological based study to get to the heart of the matter would not likely help us understand, either.

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"New York remains the world's financial capital, and it makes sense to be based here in the heart of market activity, " says Henry Paulson, Goldman's chairman.

FORBES: Rubbing elbows