Stroke magnetic resonance imaging within 6 hours after onset of hyperacute cerebral ischemia - Schellinger, Peter; Rhyssel, Henning; Orakcioglu, Berk; Sartor, Klaus; Hacke, Werner; Fiebach, Jochen Benedikt; Jansen, Olav; Ringleb, Peter A.; Mohr, Alexander; Steiner, Thorsten; Heiland, Sabine; Schwab, Stefan; et al. (Annals of neurology, 2001)