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Attendees move between session halls on day two of the World Economic Forum (WEF) in Davos, Switzerland, on Thursday, Jan. 22, 2015. World leaders, influential executives, bankers and policy makers attend the 45th annual meeting of the World Economic Forum in Davos from Jan. 21-24. Photographer: Jason Alden/Bloomberg via Getty Images

Attendees move between session halls on day two of the World Economic Forum (WEF) in Davos, Switzerland, on Thursday, Jan. 22, 2015. World leaders, influential executives, bankers and policy makers attend the 45th annual meeting of the World Economic Forum in Davos from Jan. 21-24. Photographer: Jason Alden/Bloomberg via Getty Images
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