1. Radiochemistry, Department of Chemistry, University of Helsinki, P.O. Box 55, FI-00014 Helsinki, Finland
2. Turku PET Centre, University of Turku, Kiinamyllynkatu 4-8, FI-20520 Turku, Finland
3. Turku Center for Disease Modeling, Institute of Biomedicine, University of Turku, FI-20520 Turku, Finland
4. Department of Medical Physics, Turku University Hospital, FI-20521 Turku, Finland
5. Department of Chemistry, University of Turku, FI-20014 Turku, Finland