Neural correlates of the Clock Drawing Test performance in Alzheimer’s disease: a FDG-PET study - Lee, DY; Seo, EH; Choo, IH; Kim, SG; Lee, JS; Lee, DS; Jhoo, JH; Kim, KW; Youn, JC; Woo, JI (Dementia and Geriatric Cognitive Disorders, 2008)