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<http://linkedlifedata.com/resource/pubmed/commentcorrection/21776095-873652> <http://linkedlifedata.com/resource/pubmed/referenceSource> "Int J Addict. 1977 Apr;12(2-3):227-39" .
<http://linkedlifedata.com/resource/pubmed/commentcorrection/21776095-873652> <http://linkedlifedata.com/resource/pubmed/referesTo> <http://linkedlifedata.com/resource/pubmed/id/873652> .