Pneumocephalus
In:Vinken P. J. & Bruyn, G. W. Ed, Handbook of Clinical Neurology, Vol 24, North-Holland Publ Co, Am, terdam, 197Markham, J. W., 1976
Trigger Factors and Their Attributable Risk for Rupture of Intracranial Aneurysms A Case-Crossover Study
Stroke 42:1878-1882, Vlak, M.H.M.,et al, 2011
Uncommon symptoms of migraine
Trans Ophthal Soc U K 61:205, Butler,T.H., 1941