9Kassell NF, Torner JC, Jane JA,et al. The international cooperative study on the timing of aneurysm surgery. Ⅱ : Surgical results[J]. J Neurosurg, 1990, 73(1):37-47.
10Urbach H, Zenmer J, Solymosi L. The need for repeat angiography in subarachnoid haemorrhage[J]. Neuroradiology,1998, 40(1) :4-6.
