FILE - In this June 20, 2011 file photo, a Walgreens pharmacy sign is displayed in Philadelphia. The nation's largest drugstore chain says it earned $353 million, or 39 per share, in its 2012 fiscal fourth quarter. (AP Photo/Matt Rourke, File)

Associated Press
FILE - In this June 20, 2011 file photo, a Walgreens pharmacy sign is displayed in Philadelphia. The nation's largest drugstore chain says it earned $353 million, or 39 per share, in its 2012 fiscal fourth quarter. (AP Photo/Matt Rourke, File)
FILE - In this June 20, 2011 file photo, a Walgreens pharmacy sign is displayed in Philadelphia. The nation's largest drugstore chain says it earned $353 million, or 39 per share, in its 2012 fiscal fourth quarter. (AP Photo/Matt Rourke, File)
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