1. Department of Drug Design and Pharmacology, Faculty of Health and Medical Sciences, University of Copenhagen, Universitetsparken 2, 2100 Copenhagen, Denmark
2. Neurobiology Research Unit and CIMBI, Copenhagen University Hospital, Rigshospitalet, Blegdamsvej 9, 2100 Copenhagen, Denmark
3. Radiation Physics, Nuclear Medicine Physics Unit, Skånes University Hospital, Barngatan 3, 222 42 Lund, Sweden
4. Institute of Pharmacy & Biochemistry, Johannes Gutenberg University, D-55128 Mainz, Germany
5. Department of Psychiatry and Psychotherapy, Faculty of Health and Medical Sciences, University of Medical Center, D-55131 Mainz, Germany
6. Department of Clinical Physiology, Nuclear Medicine and PET, University Hospital Copenhagen, Rigshospitalet Blegdamsvej 9, 2100 Copenhagen, Denmark