Introduction to the special issue on controversies in dementia.
D000368:Aged; D000544:Alzheimer Disease / Q000188:drug therapy / Q000473:pathology; D001927:Brain Diseases / Q000150:complications; D003704:Dementia / Q000453:epidemiology* / Q000209:etiology / Q000473:pathology / Q000628:therapy; D004196:Disease Outbreaks; D018450:Disease Progression; D014943:Global Health; D006801:Humans; D008875:Middle Aged; D015995:Prevalence; D012307:Risk Factors