Time to treatment with recombinant tissue plasminogen activator and outcome of stroke in clinical practice: retrospective analysis of hospital quality assurance data with comparison with results from randomised clinical trials - Gumbinger, Christoph; Reuter, Björn; Stock, Christian; Sauer, Tamara; Kern, Rolf; Ringleb, Peter A.; Hennerici, Michael G.; Hacke, Werner (The BMJ, 2014)