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PHD is a wholly-owned subsidiary of Omnicom Media Group (www.omnicommediagroup.com), the media division of Omnicom Group Inc. Omnicom Group Inc. (NYSE: OMC) (www.omnicomgroup.com) is a leading global marketing and corporate communications company. Omnicom's branded networks and numerous specialty firms provide advertising, media, direct and promotional marketing, public relations and other specialty communications services to over 5,000 clients in more than 100 countries.