BRIEF-PostNL shares open down 3 pctt after Q2 results

AMSTERDAM Mon Aug 5, 2013 3:00am EDT

AMSTERDAM Aug 5 (Reuters) - PostNL NV : * Shares open down 3 percent after Q2 results

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After wave of QE, onus shifts to leaders to boost economy

DAVOS, Switzerland - Central banks have done their best to rescue the world economy by printing money and politicians must now act fast to enact structural reforms and pro-investment policies to boost growth, central bankers said on Saturday.