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<http://linkedlifedata.com/resource/pubmed/commentcorrection/21559275-7205919> <http://linkedlifedata.com/resource/pubmed/referenceType> "Cites" .
<http://linkedlifedata.com/resource/pubmed/commentcorrection/21559275-7205919> <http://linkedlifedata.com/resource/pubmed/referenceSource> "J Med Educ. 1981 Mar;56(3):181-6" .
<http://linkedlifedata.com/resource/pubmed/commentcorrection/21559275-7205919> <http://linkedlifedata.com/resource/pubmed/referesTo> <http://linkedlifedata.com/resource/pubmed/id/7205919> .