Mayo's Older Americans Normative Studies: Visual Form Discrimination and copy trial of the Rey-Osterrieth Complex Figure. - Machulda, M. M.; Ivnik, R. J.; Smith, G. E.; Ferman, T. J.; Boeve, B. F.; Knopman, D.; Petersen, R. C.; Tangalos, E. G. (Journal of Clinical & Experimental Neuropsychology, 2007)