Mikael Hed, chief executive officer of Rovio Entertainment Ltd., poses for a photograph at the company's headquarters in Espoo, Finland, on Monday, Sept. 5, 2011. Rovio Entertainment Ltd., the creator of the 'Angry Birds' mobile-phone game and brand, is on track for an initial public offering in a few years, Hed said in an interview. Photographer: Ville Mannikko/Bloomberg via Getty Images
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