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Science Direct数据库在输入检索词时，区分检索词的大小写。
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Eleanor Reyes was once arrested for attempting to flag down drivers on the freeway.
RAND found that dementia would take a high economic toll than heart disease and cancer by 2040.
More than 15% of Americans (about 3.8 million people) already have dementia.
If the rate of dementia slows, the overall number of people getting sick will slow with it.
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