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<http://linkedlifedata.com/resource/pubmed/commentcorrection/3570031-891486> <http://linkedlifedata.com/resource/pubmed/referenceType> "Cites" .
<http://linkedlifedata.com/resource/pubmed/commentcorrection/3570031-891486> <http://linkedlifedata.com/resource/pubmed/referenceSource> "Endoscopy. 1977 May;9(2):95-8" .
<http://linkedlifedata.com/resource/pubmed/commentcorrection/3570031-891486> <http://linkedlifedata.com/resource/pubmed/referesTo> <http://linkedlifedata.com/resource/pubmed/id/891486> .