1. Duke University Medical CenterDurhamNCUSA
2. Meridien ResearchSt. PetersburgFLUSA
3. Neurological AssociatesAlbanyNYUSA
4. Massachusetts General HospitalBostonMAUSA
5. Banner Alzheimer's InstitutePhoenixAZUSA
6. Premier ResearchWest Palm BeachFLUSA
7. MD ClinicalHallandale BeachFLUSA
8. Medical University of South CarolinaCharlestonSCUSA
9. Avid RadiopharmaceuticalsPhiladelphiaPAUSA