1. Department of Drug Design and Pharmacology Faculty of Health and Medical Sciences University of Copenhagen Jagtvej 160 Copenhagen 2100 Denmark
2. Department of Clinical Physiology Nuclear Medicine & PET Rigshospitalet, Blegdamsvej 9 Copenhagen 2100 Denmark
3. Leiden Academic Centre for Drug Research (LACDR) Leiden University Einsteinweg 55 Leiden 2333CC The Netherlands