When is dementia reversible?
D000369:Aged, 80 and over; D000375:Aging / Q000502:physiology; D000544:Alzheimer Disease / Q000503:physiopathology / Q000628:therapy; D003704:Dementia / Q000209:etiology / Q000503:physiopathology / Q000628:therapy; D015140:Dementia, Vascular / Q000517:prevention & control; D006801:Humans; D014806:Vitamin B 12 Deficiency / Q000150:complications