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<http://linkedlifedata.com/resource/pubmed/commentcorrection/21203416-18973529> <http://linkedlifedata.com/resource/pubmed/referenceSource> "J Periodontal Res. 2009 Feb;44(1):1-12" .
<http://linkedlifedata.com/resource/pubmed/commentcorrection/21203416-18973529> <http://linkedlifedata.com/resource/pubmed/referesTo> <http://linkedlifedata.com/resource/pubmed/id/18973529> .