1. Department of Chemistry, Radiochemistry, University of Helsinki, FI-00014 Helsinki, Finland
2. Amsterdam UMC, Vrije Universiteit Amsterdam, Radiology & Nuclear Medicine, Cancer Center Amsterdam, De Boelelaan 1117, 1081 HV Amsterdam, The Netherlands
3. HUS Medical Imaging Center, Clinical Physiology and Nuclear Medicine, University of Helsinki and Helsinki University Hospital, 00029 HUS Helsinki, Finland
4. Turku PET Centre, Department of Chemistry, University of Turku, 20520 Turku, Finland