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<http://linkedlifedata.com/resource/pubmed/commentcorrection/21541277-5087475> <http://linkedlifedata.com/resource/pubmed/referenceType> "Cites" .
<http://linkedlifedata.com/resource/pubmed/commentcorrection/21541277-5087475> <http://linkedlifedata.com/resource/pubmed/referenceSource> "Sci Am. 1971 Jun;224(6):44-52" .
<http://linkedlifedata.com/resource/pubmed/commentcorrection/21541277-5087475> <http://linkedlifedata.com/resource/pubmed/referesTo> <http://linkedlifedata.com/resource/pubmed/id/5087475> .