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343-8(May 2010)20532129<m:linebreak></m:linebreak> <m:linebreak></m:linebreak>JID: 101475967; OID: NLM: PMC2881615; 2009/10/14 received; 2010/02/22 accepted; 2010/05/14 epublish; ppublish;<m:linebreak></m:linebreak> <m:linebreak></m:linebreak>Anàlisi de dades.