Roles of Education and IQ in Cognitive Reserve in Parkinson’s Disease-Mild Cognitive Impairment oleh M.J. Armstrong, G. Naglie, S. Duff-Canning, C. Meaney, D. Gill, P.J. Eslinger, C. Zadikoff, M. Mapstone, K.L. Chou, C. Persad, I. Litvan, B.T. Mast, S. Fox, D.F. Tang-Wai, C. Marras