Ferreira D, Hansson O, Barroso J, Molina Y, Machado A, Hernández-Cabrera JA, Muehlboeck JS, Stomrud E, Nägga K, Lindberg O, Ames D, Kalpouzos G, Fratiglioni L, Bäckman L, Graff C, Mecocci P, Vellas B, Tsolaki M, Kłoszewska I, Soininen H, Lovestone S, Ahlström H, Lind L, Larsson EM, Wahlund LO, Simmons A, Westman E; and for the AddNeuroMed consortium, for the Alzheimer’s Disease Neuroimaging Initiative (ADNI).; Australian Imaging Biomarkers and Lifestyle Study of Ageing (AIBL) research group.