Former president George W. Bush had a heart stent inserted into an artery to prevent blockage. CBS News chief medical correspondent Dr. Jon LaPook explains what the procedure is, how it's done, and ... more 
Former president George W. Bush had a heart stent inserted into an artery to prevent blockage. CBS News chief medical correspondent Dr. Jon LaPook explains what the procedure is, how it's done, and how to assess who might benefit from it. less 
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Wed, Aug 7, 2013 7:40 AM EDT