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<http://linkedlifedata.com/resource/pubmed/commentcorrection/21575274-18278375> <http://linkedlifedata.com/resource/pubmed/referenceSource> "J Bras Pneumol. 2008 Jan;34(1):42-6" .
<http://linkedlifedata.com/resource/pubmed/commentcorrection/21575274-18278375> <http://linkedlifedata.com/resource/pubmed/referesTo> <http://linkedlifedata.com/resource/pubmed/id/18278375> .