Cluster of Creutzfeldt-Jakob disease and presenile dementia.
D000544:Alzheimer Disease / Q000453:epidemiology; D007562:Creutzfeldt-Jakob Syndrome / Q000453:epidemiology* / Q000209:etiology; D003604:Czechoslovakia; D003704:Dementia / Q000453:epidemiology* / Q000209:etiology; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D012424:Rural Population