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<http://linkedlifedata.com/resource/pubmed/commentcorrection/21688756-17943746> <http://linkedlifedata.com/resource/pubmed/referenceSource> "Cochrane Database Syst Rev. 2007;(4):CD000567" .
<http://linkedlifedata.com/resource/pubmed/commentcorrection/21688756-17943746> <http://linkedlifedata.com/resource/pubmed/referesTo> <http://linkedlifedata.com/resource/pubmed/id/17943746> .
<http://linkedlifedata.com/resource/pubmed/id/21688756> <http://linkedlifedata.com/resource/pubmed/commentsCorrections> <http://linkedlifedata.com/resource/pubmed/commentcorrection/21688756-17943746> .