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Mon Jan 28, 2013 6:50pm IST

1 of 24. Relatives of victims of the fire at Boate Kiss nightclub attend a collective wake in the southern city of Santa Maria, 187 miles (301 km) west of the state capital Porto Alegre January 27, 2013. The nightclub fire killed at least 232 people in Santa Maria early on Sunday when a band's pyrotechnics show set the building ablaze and fleeing party-goers stampeded toward blocked and overcrowded exits in the ensuing panic, officials said.

Credit: Reuters/Ricardo Moraes

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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.