[O1–06–02]: BIPHASIC MODEL IN PRECLINICAL ALZHEIMER's DISEASE: AV45 PET, CSF TAU AND CORTICAL THICKNESS. (1st July 2017) - Vilaplana, Eduard; Montal, Victor; Pegueroles, Jordi; Alcolea, Daniel; Carmona‐Iragui, Maria; Sampedro, Frederic; Camacho, Valle; Clarimon, Jordi; Blesa, Rafael; Lleó, Alberto; Fortea, Juan