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Dr. Sanjay Gupta interviews CNN Hero Richard St. Denis backstage at the 2011 Heroes event in Los Angeles.
Dr. Sanjay Gupta interviews CNN Hero Richard St. Denis backstage at the 2011 Heroes event in Los Angeles.

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    CNN Heroes backstage: Richard St. Denis

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CNN Heroes backstage: Richard St. Denis

CNN's Dr. Sanjay Gupta interviews Top 10 CNN Hero Richard St. Denis at "CNN Heroes: An All-Star Tribute."

CNN Heroes backstage: Richard St. Denis

CNN's Dr. Sanjay Gupta interviews Top 10 CNN Hero Richard St. Denis at "CNN Heroes: An All-Star Tribute."