1. Department of RadiologyMayo ClinicRochesterMNUSA
2. Dementia Research CentreUCL Institute of NeurologyUniversity College London, Queen SquareLondonUnited Kingdom
3. Department of Neurology and Laboratory of Neuro ImagingDavid Geffen School of Medicine UCLACAUSA
4. Center for Imaging of Neurodegenerative DiseasesVeterans Affairs Medical CenterDepartment of Radiology and Biomedical ImagingUniversity of CaliforniaSan FranciscoCAUSA
5. Siemens Schweiz AGHealthcare Sector IM&WS SRenensSwitzerland
6. Center for Biomedical ImagingDepartment of Anatomy and NeurobiologyBoston University School of MedicineDepartment of Environmental HealthBoston University School of Public HealthBostonMAUSA
7. Department of Neurology and Center for NeuroscienceUC DavisDavisCAUSA
8. Departments of Neurosciences and RadiologyUniversity of California, San DiegoLa JollaCAUSA
9. Veterans Affairs and University of CaliforniaSan FranciscoCAUSA