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USD ($)
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1/1/2010 - 3/31/2010
USD ($)
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1/1/2011 - 3/31/2011
USD ($)
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1/1/2010 - 3/31/2010
USD ($)
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1/1/2011 - 3/31/2011
USD ($)
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1/1/2010 - 3/31/2010
USD ($)
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