1. Department of Oncology, University of Alberta, Edmonton, Alberta T6G 2R3, Canada
2. Department of Nuclear Medicine, Ludwig-Maximilians-University of Munich, Munich 81377, Germany
3. McConnel Brain Imaging Centre, Montreal Neurological Institute, McGill University, 3801 University Street, Montreal, Quebec H3A 2B4, Canada
4. Jewish General Hospital, Lady Davis Institute, Montreal, Quebec HT3 1E2, Canada
5. Translational Neuroimaging Laboratory, McGill Centre for Studies in Aging, Douglas Mental Health University Institute, Montreal, Quebec H4H 1R3, Canada
6. Division of Nuclear Medicine, Department of Radiology, The University of Michigan Medical School, Ann Arbor, Michigan 48109, United States
7. Program in Neurosciences and Mental Health, Hospital for Sick Children, Toronto, Ontario M5G 0A4, Canada
8. Biomedical Chemistry, Department of Clinical Radiology and Nuclear Medicine, Medical Faculty Mannheim of Heidelberg University, 68167 Mannheim, Germany
9. Molecular Imaging and Radiochemistry, Department of Clinical Radiology and Nuclear Medicine, Medical Faculty Mannheim of Heidelberg University, Mannheim 68167, Germany