Former US President Bill Clinton has been admitted to Columbia Presbyterian Hospital after complaining of discomfort in his chest. The 63-year-old undergo a surgery had two stents - wire mesh tubes.Mr Clinton had bypass surgery in September 2004 after experiencing chest pains. Clinton has been working in recent weeks to help the relief effort in the wake of the devastating earthquake there on 12 January. His wife, US Secretary of State Hillary Clinton, is heading to New York from Washington to be with him.
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