1. Gerontopole of Toulouse, Institute of Ageing Toulouse University Hospital (CHU Toulouse) Toulouse France
2. UPS/Inserm UMR1027 University of Toulouse III Toulouse France
3. Department of Epidemiology Toulouse University Hospital (CHU Toulouse) Toulouse France
4. Neurospin Centre d'Energie Atomique Saclay Gif‐sur‐Yvette France
5. Institut du Cerveau et de la Moelle Epinière Centre d'Acquisition et de Traitement d'Image pour la maladie d'Alzheimer (CATI), Inserm U1127, CNRS UMR 7225, Sorbonne Universités, UPMC, Univ. Paris 6 Paris France
6. Nuclear Medicine Department Toulouse University Hospital (CHU Toulouse) Toulouse France