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<http://linkedlifedata.com/resource/pubmed/commentcorrection/21046421-9306868> <http://linkedlifedata.com/resource/pubmed/referenceSource> "Ann Rheum Dis. 1997 Aug;56(8):463-9" .
<http://linkedlifedata.com/resource/pubmed/commentcorrection/21046421-9306868> <http://linkedlifedata.com/resource/pubmed/referesTo> <http://linkedlifedata.com/resource/pubmed/id/9306868> .