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UNITED STATES - MARCH 27: Francis Collins, the director of the National Institutes of Health, speaks with reporters at CQ Roll Call in Washington on Friday, March 27, 2015. (Photo By Bill Clark/CQ Roll Call)

UNITED STATES - MARCH 27: Francis Collins, the director of the National Institutes of Health, speaks with reporters at CQ Roll Call in Washington on Friday, March 27, 2015. (Photo By Bill Clark/CQ Roll Call)

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