Ali M, Bath P, Brady M, Davis S, Diener HC, Donnan G, Fisher M, Hacke W, Hanley DF, Luby M, Tsivgoulis G, Wahlgren NG, Warach S, Lees KR on behalf of the VISTA Steering Committees. Development, Expansion and Use of a Stroke Clinical Trials Resource for Novel Exploratory Analyses, Poster Presented ESC,Hamburg, Germany 2011.