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<http://linkedlifedata.com/resource/pubmed/commentcorrection/21046421-9849312> <http://linkedlifedata.com/resource/pubmed/referenceSource> "Ann Rheum Dis. 1998 Sep;57(9):533-9" .
<http://linkedlifedata.com/resource/pubmed/commentcorrection/21046421-9849312> <http://linkedlifedata.com/resource/pubmed/referesTo> <http://linkedlifedata.com/resource/pubmed/id/9849312> .