Bilateral paralysis is much less common than unilateral paralysisof the vocalcords.
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2.
In 2011, James Driver was felled by an episode of temporary paralysis that left one of his vocalcords frozen.
WSJ: How to Take Years Off Your Voice
3.
Mr. Page's condition ofvocal cord paralysis is caused when one or both of the vocalcords don't open and close correctly, resulting in difficulty speaking or breathing.
WSJ: Google CEO Larry Page Diagnosed With 'Vocal Cord Paralysis'