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it's not clear how well they'll stack up against current migraine therapies, because head-to-head studies haven't been done. .

stephen silberstein, md, director, jefferson university headache center. .

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    • . may 15, 2018 .
  • ©2018 citizen digital. all rights reserved .
    "i can't think of anything else where we have done that medically," van den veyver said. .
    04:49