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<http://linkedlifedata.com/resource/pubmed/commentcorrection/21180521-15729230> <http://linkedlifedata.com/resource/pubmed/referenceSource> "Gastrointest Endosc. 2005 Feb;61(2):226-31" .
<http://linkedlifedata.com/resource/pubmed/commentcorrection/21180521-15729230> <http://linkedlifedata.com/resource/pubmed/referesTo> <http://linkedlifedata.com/resource/pubmed/id/15729230> .