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<http://linkedlifedata.com/resource/pubmed/commentcorrection/1764031-921822> <http://linkedlifedata.com/resource/pubmed/referenceSource> "Arthritis Rheum. 1977 Nov-Dec;20(8):1491-9" .
<http://linkedlifedata.com/resource/pubmed/commentcorrection/1764031-921822> <http://linkedlifedata.com/resource/pubmed/referesTo> <http://linkedlifedata.com/resource/pubmed/id/921822> .