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<http://linkedlifedata.com/resource/pubmed/commentcorrection/21532857-15505430> <http://linkedlifedata.com/resource/pubmed/referenceSource> "Korean J Gastroenterol. 2004 Oct;44(4):193-8" .
<http://linkedlifedata.com/resource/pubmed/commentcorrection/21532857-15505430> <http://linkedlifedata.com/resource/pubmed/referesTo> <http://linkedlifedata.com/resource/pubmed/id/15505430> .