1. Endocrinology Helsinki University Hospital and University of Helsinki Helsinki Finland
2. Faculty of Medicine and Health Technology Tampere University Tampere Finland
3. Department of Internal Medicine Tampere University Hospital Tampere Finland
4. Department of Pathology University of Helsinki and HUSLAB, Helsinki University Hospital Helsinki Finland
5. Turku PET Centre University of Turku Turku Finland
6. Department of clinical Physiology and Nuclear Medicine Turku University Hospital Turku Finland