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Former first lady Barbara Bush listens to a patient's question during a visit to the Barbara Bush Children's Hospital at Maine Medical Center in Portland, Maine, Thursday, Aug. 22, 2013. Bush read a children's book and introduced the patients to her dog during the visit. (AP Photo/Robert F. Bukaty)
Former first lady Barbara Bush listens to a patient's question during a visit to the Barbara Bush Children's Hospital at Maine Medical Center in Portland, Maine, Thursday, Aug. 22, 2013. Bush read a children's book and introduced the patients to her dog during the visit. (AP Photo/Robert F. Bukaty)

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    Barbara Bush hospitalized

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Barbara Bush hospitalized

Former first lady Barbara Bush remains hospitalized in Houston for a "respiratory-related issue."

Barbara Bush hospitalized

Former first lady Barbara Bush remains hospitalized in Houston for a "respiratory-related issue."