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Fifteen years ago a new "wonder" drug was first approved for use. It marked a breakthrough in the treatment of male impotence. We speak to two men who helped develop Viagra.

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9 minutes

Last on

Fri 8 Mar 2013 03:50GMT

Broadcasts

  • Thu 7 Mar 2013 09:50GMT
  • Thu 7 Mar 2013 12:50GMT
  • Thu 7 Mar 2013 20:50GMT
  • Thu 7 Mar 2013 23:50GMT
  • Fri 8 Mar 2013 03:50GMT

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