RT Journal Article SR Electronic T1 Britain grappling with dementia prevalence JF Canadian Medical Association Journal JO CMAJ FD Canadian Medical Association SP E13 OP E13 DO 10.1503/cmaj.090406 VO 180 IS 8 A1 Mary Helen Spooner YR 2009 UL http://www.cmaj.ca/content/180/8/E13.abstract