1. Center
for Integrated Molecular Brain Imaging, Rigshospitalet and University of Copenhagen, Blegdamsvej 9, DK-2100 Copenhagen, Denmark
2. Department
of Drug Design and Pharmacology, Faculty of Health and Medical Sciences, University of Copenhagen, Universitetsparken 2, DK-2100 Copenhagen, Denmark
3. Center
for Molecular Medicine, Department of Neurology and Clinical Neuroscience, Karolinska Institute and Karolinska University Hospital, 17176 Stockholm, Sweden
4. Egis Pharmaceuticals Plc, P.O. Box 100, H-1475 Budapest, Hungary
5. PET
and Cyclotron Unit, Rigshospitalet, Blegdamsvej 9, DK-2100 Copenhagen, Denmark