Barbara Bush undergoes tests in Texas hospital

In this Oct. 3, 2008 file photo, former first lady Barbara Bush speaks at a dedication ceremony for the George and Barbara Bush Center at the University of New England, in Biddeford, Maine. (AP Photo/Robert F. Bukaty, File)

March 28, 2010 12:43:21 PM PDT
Former first lady Barbara Bush remains hospitalized in Houston, where she's undergoing what a family spokeswoman describes as routine tests.

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