1. Department of Chemistry, Faculty of Science, University of Copenhagen, Universitetsparken 5, Copenhagen 2100, Denmark
2. Department of Science and Environment, Roskilde University, Universitetsparken 1, Roskilde 4000, Denmark
3. Department of Drug Design and Pharmacology, Faculty of Health and Medical Sciences, University of Copenhagen, Jagtvej 160, Copenhagen 2100, Denmark
4. Department of Clinical Physiology, Nuclear Medicine & PET, Rigshospitalet, Blegdamsvej 9, Copenhagen 2100, Denmark