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<http://linkedlifedata.com/resource/pubmed/commentcorrection/21804892-880761> <http://linkedlifedata.com/resource/pubmed/referenceSource> "Clin Orthop Relat Res. 1977 Jun;(125):17-23" .
<http://linkedlifedata.com/resource/pubmed/commentcorrection/21804892-880761> <http://linkedlifedata.com/resource/pubmed/referesTo> <http://linkedlifedata.com/resource/pubmed/id/880761> .
<http://linkedlifedata.com/resource/pubmed/id/21804892> <http://linkedlifedata.com/resource/pubmed/commentsCorrections> <http://linkedlifedata.com/resource/pubmed/commentcorrection/21804892-880761> .