1. Department of Neurology, Layton Aging and Alzheimer's Disease CenterOregon Health & Science UniversityPortlandOR
2. Department of NeurologyUniversity of MichiganAnn ArborMI
3. Michigan Alzheimer's Disease CenterUniversity of MichiganAnn ArborMI
4. Department of BiostatisticsUniversity of MichiganAnn ArborMI
5. Department of Public Health SciencesUniversity of CaliforniaDavisCA
6. Portland Veteran Affairs Medical CenterPortlandOR
7. Department of RadiologyUniversity of MichiganAnn ArborMI
8. Neurology Service and Geriatric ResearchEducation and Clinical Center, Veterans Affairs Ann Arbor Healthcare SystemAnn ArborMI