P3‐384: OPTIMIZING THE SELECTION OF CORTICAL THICKNESS REGIONS TO PREDICT MCI PROGRESSION TO AD DEMENTIA: APPLICATION TO ROSAS AND ADNI. (1st July 2019) - Soret, Perrine; Bracoud, Luc; Xuereb, Laura; Bonneville, Fabrice; Schaerer, Joel; Scott, David; Suhy, Joyce; Vellas, Bruno; Merdes, Annette; ,