Subarachnoid Haemorrhage
Lancet 369:306-318, van Gijn,J.,et al, 2007
Subarachnoid Hemorrhage Without Detectable Aneurysm
Stroke 24:1403-1409, Rinkel,G.J.E.,et al, 1993
Nonaneurysmal Subarachnoid Hemorrhage
Ann Neurol 29:461-462, Adams,H.P.&Gordon,D.L., 1991