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, Service Hospitalier Frédéric Joliot for the synthesis of the 11 C-PIB and patient management, and to the CENIR (Centre de Neuroimagerie de Recherche) for patients' management during MRI acquisition. We acknowledge the CATI (Centre de d'Acquisition et de Traitement automatisé de l'Image) for its technical support

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, French Fondation Nationale de Gérontologie and MEDIPAR; French Health Ministry, Institut Roche de Recherche et Médecine Translationnelle and Fondation pour la Recherche Médicale (to LH)

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