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<http://linkedlifedata.com/resource/pubmed/commentcorrection/21886882-18790678> <http://linkedlifedata.com/resource/pubmed/referenceSource> "Spine J. 2009 Jan-Feb;9(1):31-8" .
<http://linkedlifedata.com/resource/pubmed/commentcorrection/21886882-18790678> <http://linkedlifedata.com/resource/pubmed/referesTo> <http://linkedlifedata.com/resource/pubmed/id/18790678> .
<http://linkedlifedata.com/resource/pubmed/id/21886882> <http://linkedlifedata.com/resource/pubmed/commentsCorrections> <http://linkedlifedata.com/resource/pubmed/commentcorrection/21886882-18790678> .