Familial Pick's disease and dementia in frontal lobe degeneration of non-Alzheimer type are not variants of prion disease. Issue 6 (June 1994) - Collinge, J; Palmer, M S; Sidle, K C; Mahal, S P; Campbell, T; Brown, J; Hardy, J; Brun, A E; Gustafson, L; Bakker, E