On 2014 Apr 01, Christopher Southan commented:
A 2009 update of this work is reported at http://www.ncbi.nlm.nih.gov/pubmed/20298516. An open text version of this article is at http://figshare.com/articles/Complementarity_between_public_and_commercial_databases_new_opportunities_in_medicinal_chemistry_informatics/979201
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