1. Turku PET Centre, Turku, Finland
2. Position Emission Tomography (PET) Laboratory, National Research Council Institute of Clinical Physiology, Pisa, Italy
3. Department of Pharmacology and Clinical Pharmacology, University of Turku, Finland
4. Department of Pharmacology and Toxicology, University of Kuopio and Kuopio University Hospital, Kuopio, Finland
5. Department of Radiology, Turku University Hospital, Turku, Finland
6. Karolinska Institutet, Stockholm, Sweden
7. Department of Medicine, Turku University Hospital, Turku, Finland
8. Department of Medicine, University of Gothenburg, Gothenburg, Sweden
9. Department of Internal Medicine, University of Pisa School of Medicine, Pisa, Italy