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St. Jude Medical's (STJ) Amplatzer PFO Occluder, a device to close holes in the heart after a...

St. Jude Medical's (STJ) Amplatzer PFO Occluder, a device to close holes in the heart after a stroke, didn't definitively perform better than drugs in preventing a second stroke in patients aged below 60, two long-term studies have found. The device has been used for almost 20 years, generating under $100M a year; its use could now be called into question.
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