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<http://linkedlifedata.com/resource/pubmed/commentcorrection/21197319-14699279> <http://linkedlifedata.com/resource/pubmed/referenceSource> "Spine (Phila Pa 1976). 2004 Jan 1;29(1):70-7; discussion 77-8" .
<http://linkedlifedata.com/resource/pubmed/commentcorrection/21197319-14699279> <http://linkedlifedata.com/resource/pubmed/referesTo> <http://linkedlifedata.com/resource/pubmed/id/14699279> .