Additional file 2: of Prevalence and risk of progression of preclinical Alzheimer’s disease stages: a systematic review and meta-analysis ParnettiLucilla ChipiElena SalvadoriNicola D’AndreaKatia EusebiPaolo 2019 Table S2. Cut-offs used for defining pre-clinical Alzheimer’s disease according biomarkers positivity. Table S3. Education years. (DOCX 53 kb)