1. Forschungszentrum Jülich GmbH - Institute of Neuroscience and Medicine; Jülich Germany
2. Department of Nuclear Medicine; Charité - Universitätsmedizin Berlin; Berlin Germany
3. German Primate Center; Göttingen Germany
4. Department of Nuclear Medicine; Friedrich-Alexander University; Erlangen/Nürnberg Germany
5. Department of Neuroscience and Pharmacology; University of Copenhagen; Denmark
6. Department of Nuclear Medicine; University of Freiburg; Freiburg Germany
7. Department of Nuclear Medicine; University of Aachen; Aachen Germany
8. Department of Neurology; University Medical Center, Georg-August-University Göttingen; Göttingen Germany