8Ruijs AC, Driven CM, Algra A, et al. The risk of rebleeding after external lumbar drainage in patients with untreated ruptured cerebral aneurysms. Acta Neurochir(Wien), 2005, 147(11): 1157-1162.
9Feigin VL, Lawes CM, Bennett DA, et al. Stroke epidemiology: a review of population-based studies of incidence, prevalence, and case-fatality in the late 20th century. Lancet Neurol, 2003, 2(1): 43-53.
10Linn FHH, Rinkel GJE, Algra A, et al. Incidence of subarachnoid hemorrhage: role of region, year and rate of computed tomography: a meta-analysis. Stroke, 1996, 27: 625-629.
