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<http://linkedlifedata.com/resource/pubmed/commentcorrection/2138877-7020614> <http://linkedlifedata.com/resource/pubmed/referenceSource> "Ann Rheum Dis. 1981 Aug;40(4):388-95" .
<http://linkedlifedata.com/resource/pubmed/commentcorrection/2138877-7020614> <http://linkedlifedata.com/resource/pubmed/referesTo> <http://linkedlifedata.com/resource/pubmed/id/7020614> .