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<http://linkedlifedata.com/resource/pubmed/commentcorrection/21217955-277629> <http://linkedlifedata.com/resource/pubmed/referenceSource> "J Endod. 1978 Feb;4(2):60-4" .
<http://linkedlifedata.com/resource/pubmed/commentcorrection/21217955-277629> <http://linkedlifedata.com/resource/pubmed/referesTo> <http://linkedlifedata.com/resource/pubmed/id/277629> .