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<http://linkedlifedata.com/resource/pubmed/commentcorrection/21772922-19692805> <http://linkedlifedata.com/resource/pubmed/referenceSource> "Clin J Pain. 2009 Sep;25(7):624-31" .
<http://linkedlifedata.com/resource/pubmed/commentcorrection/21772922-19692805> <http://linkedlifedata.com/resource/pubmed/referesTo> <http://linkedlifedata.com/resource/pubmed/id/19692805> .