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<http://linkedlifedata.com/resource/pubmed/commentcorrection/2021722-2032043> <http://linkedlifedata.com/resource/pubmed/referenceType> "CommentIn" .
<http://linkedlifedata.com/resource/pubmed/commentcorrection/2021722-2032043> <http://linkedlifedata.com/resource/pubmed/referenceSource> "BMJ. 1991 Apr 20;302(6782):961" .
<http://linkedlifedata.com/resource/pubmed/commentcorrection/2021722-2032043> <http://linkedlifedata.com/resource/pubmed/referesTo> <http://linkedlifedata.com/resource/pubmed/id/2032043> .