Deary, I. J., Ebmeier, K. P., MacLeod, K. M., Dougall, N., Hepburn, D. A., Frier, B. M., & Goodwin, G. M. (1994). PASAT performance and the pattern of uptake of 99mTc-exametazime in brain estimated with single photon emission tomography. Biological Psychology, 38(1), 1-18. https://doi.org/10.1016/0301-0511%2894%2990046-9