Mother Lisa Fitzhugh didn't think much of the fuss until one day in the spring of 1994, when she gave her 18-month-old daughter, Erin, a bite of walnut.

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One day, the spring in one of the remotes snapped, and that was that.

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Diana Levine went to the hospital with a headache one spring day in 2000 and wound up losing an arm.

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