For the Sake of Education: [ Valve to help sick lungs breathe (02:57) Report Aug 20 - A tiny device could help the millions of people worldwide who suffer from emphysema by giving them a less painful alternative to surgery. Ben Gruber reports.]

Sunday, August 23, 2009

[ Valve to help sick lungs breathe (02:57) Report Aug 20 - A tiny device could help the millions of people worldwide who suffer from emphysema by giving them a less painful alternative to surgery. Ben Gruber reports.]

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