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<http://linkedlifedata.com/resource/pubmed/commentcorrection/21901702-17636829> <http://linkedlifedata.com/resource/pubmed/referenceType> "UpdateOf" .
<http://linkedlifedata.com/resource/pubmed/commentcorrection/21901702-17636829> <http://linkedlifedata.com/resource/pubmed/referenceSource> "Cochrane Database Syst Rev. 2007;(3):CD006165" .
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<http://linkedlifedata.com/resource/pubmed/id/21901702> <http://linkedlifedata.com/resource/pubmed/commentsCorrections> <http://linkedlifedata.com/resource/pubmed/commentcorrection/21901702-17636829> .