P1‐253: THE ROLE OF CEREBROSPINAL FLUID T‐TAU/Aβ RATIO IN DIFFERENTIATION OF AD FROM NON‐AD DEMENTIA. (1st July 2006) - Huang, Xinying; Lei, Dan; Mao, Chenhui; Liu, Caiyan; Dong, Liling; Sha, Longze; Li, Jie; Xu, Qi; Gao, Jing