1. National Institute of Mental Health, Bethesda, Maryland, USA
2. GlaxoSmithKline and Imperial College, London, UK
3. CEA/DSV/SHF, Orsay, France
4. University of Aarhus, Aarhus, Denmark
5. GlaxoSmithKline and University of Oxford, London, UK
6. University of Wisconsin, Madison, Wisconsin, USA
7. Centre for Addiction and Mental Health & University of Toronto, Toronto, Ontario, Canada
8. UCLA School of Medicine, Los Angeles, California, USA
9. Columbia University, New York, New York, USA
10. National Cardiovascular Center Research Institute, Suita City, Osaka, Japan
11. National Institute of Radiological Sciences, Chiba, Japan
12. Tokyo Metropolitan Institute of Gerontology, Tokyo, Japan
13. University of Michigan, Ann Arbor, Michigan, USA
14. Copenhagen University Hospital Rigshospitalet, Copenhagen, Denmark
15. Turku PET Centre, Turku, Finland
16. VU University Medical Centre, Amsterdam, The Netherlands
17. Brookhaven National Laboratory, Upton, New York, USA
18. Pfizer Global R&D, Groton, Connecticut, USA
19. Washington University School of Medicine, St Louis, Missouri, USA
20. Indiana University-Purdue University, Indianapolis, Indiana, USA
21. University of Pittsburgh, Pittsburgh, Pennsylvania, USA
22. University of British Columbia, Vancouver, British Columbia, Canada
23. Emory University, Atlanta, Georgia, USA
24. Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
25. Yale University, New Haven, Connecticut, USA