The BioGRID Interaction Database: 2008 update. - Bobby-Joe Breitkreutz; Chris Stark; Teresa Reguly; Lorrie Boucher; Ashton Breitkreutz; Michael S. Livstone; Rose Oughtred; Daniel H. Lackner; Jürg Bähler; Valerie Wood; Kara Dolinski; Mike Tyers (Nucleic Acids Res., 2008)