Early brain injury after aneurysmal subarachnoid hemorrhage: a multimodal neuromonitoring study - Helbok, R; Schiefecker, A; Beer, R; Dietmann, A; Antunes, AP; Sohm, F; Fischer, M; Hackl, WO; Rhomberg, P; Lackner, P; Pfausler, B; Thome, C; Humpel, C; Schmutzhard, E (Critical Care, 2015)