Watch this video about implantable hearing devices on HowStuffWorks. Hearing loss usually occurs gradually, often over a 25-30 year period, and is a leading cause of depression among elderly persons....
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Watch this video about implantable hearing devices on HowStuffWorks. Hearing loss usually occurs gradually, often over a 25-30 year period, and is a leading cause of depression among elderly persons. See how Otologics' hearing device works in this video from World Business Review.
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