MR Imaging in Pretruncal Nonaneurysmal Subarachnoid Hemorrhage,Is It Worthwhile?Stroke 29:2514-2516, Wijdicks,E.F.M.,et al, 1998
Circadian Fluctuations in Onset of Subarachnoid HemorrhageStroke 28:805-808, Vermeer,S.E.,et al, 1997