| http://www.w3.org/ns/prov#value | - <p><span style=font-size: 10pt;>The Cyberonics vagus nerve stimulation implant, which has a licence in North America and Europe for refractory epilepsy and depression, has been implanted in more than 70,000 patients over the last twenty years and has been found to be helpful to patients with several other conditions including headache, anxiety, gastric obesity and other conditions.
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