Ebmeier, K. P., Booker, K., Gregor, A., Cull, A., Dougall, N., Sellar, R., & Goodwin, G. M. (1994). Single photon emission computed tomography in long-term survivors of adult brain tumours. Journal of Neurology, Neurosurgery and Psychiatry, 57(6), 729-733. https://doi.org/10.1136/jnnp.57.6.729