Subarachnoid Haemorrhage
BMJ 333:235-240, Al-Shahi,R.,et al, 2006
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Neurol 62:1414-1416, Lu,S.-R.,et al, 2004
Subarachnoid Haemorrhage
Lancet 339:653-655, Van Gijn,J., 1992
Calcium Channel Blockers in the Prophylactic Treatment of Vascular Headache
Ann Int Med 102:395-397, Meyer,J.S., 1985