1. Turku PET Centre, University of Turku, Turku, Finland
2. Institute of Biomedicine, University of Turku, Turku, Finland
3. Turku PET Centre, Turku University Hospital, Turku, Finland
4. Department of Biostatistics, University of Turku, Turku, Finland
5. Department of Endocrinology, Turku University Hospital, Turku, Finland