FILE - In this Feb. 7, 2012 file photo, pedestrians walk past a CVS store in Chicago. CVS Caremark Corp. is reporting their fourth quarter 2012 earnings on Wednesday, Feb. 6, 2013. (AP Photo/M. Spencer Green, File)

Associated Press
FILE - In this Feb. 7, 2012 file photo, pedestrians walk past a CVS store in Chicago. CVS Caremark Corp. is reporting their fourth quarter 2012 earnings on Wednesday, Feb. 6, 2013.  (AP Photo/M. Spencer Green, File)
FILE - In this Feb. 7, 2012 file photo, pedestrians walk past a CVS store in Chicago. CVS Caremark Corp. is reporting their fourth quarter 2012 earnings on Wednesday, Feb. 6, 2013. (AP Photo/M. Spencer Green, File)
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