def self.source_info
        {
          base_url:           'http://stm.sciencemag.org/content/9/383/eaag1166',
          site_url:           'http://stm.sciencemag.org/content/9/383/eaag1166',
          citation:           'The druggable genome and support for target identification and validation in drug development. Finan C, Gaulton A, Kurger F, Lumbers T, Shah T, Engmann J, Galver L, Kelly R, Karlsson A, Santos R, Overington J, Hingorani A, Casas JP.   Sci. Transl. Med. 2017 Mar 29;9(383):eaag1166 PMID: 28356508.',