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<http://linkedlifedata.com/resource/pubmed/commentcorrection/21249651-14973975> <http://linkedlifedata.com/resource/pubmed/referenceType> "UpdateOf" .
<http://linkedlifedata.com/resource/pubmed/commentcorrection/21249651-14973975> <http://linkedlifedata.com/resource/pubmed/referenceSource> "Cochrane Database Syst Rev. 2004;(1):CD001955" .
<http://linkedlifedata.com/resource/pubmed/commentcorrection/21249651-14973975> <http://linkedlifedata.com/resource/pubmed/referesTo> <http://linkedlifedata.com/resource/pubmed/id/14973975> .