%0 Journal Article %T Physical Activity and Risk of Cognitive Impairment and Dementia in Elderly Persons %A Laurin, Danielle %A Verreault, René %A Lindsay, Joan %A MacPherson, Kathleen %A Rockwood, Kenneth %J JAMA Neurology %V 58 %N 3 %P 498-504 %@ 2168-6149 %D 2001-03-01 %I American Medical Association %~ DeepDyve