http://video.msn.com/v/us/msnbc.htm?g=072c555b-5324-44db-a643-6d5441dbc966&f=00

ETD to add you need to see the video in IE.

In case that link did not work:
the link is further down the page:
http://www.msnbc.msn.com/id/3032619/

This is the link from the NIH (National Health Instutite)
http://www.nih.gov/news/pr/mar2006/od-29.htm