1. Department of Endocrinology, Groningen University Medical Centre, Groningen, The Netherlands.
2. Department of Surgical Oncology, Groningen University Medical Centre, Groningen, The Netherlands.
3. Department of Internal Medicine, Groningen University Medical Centre, Groningen, The Netherlands.
4. Department of Nuclear Medicine and Molecular Imaging, Leeuwarden Medical Center, Leeuwarden, The Netherlands.
5. Department of Laboratory Medicine, Groningen University Medical Centre, Groningen, The Netherlands.
6. Department of Nuclear Medicine and Molecular Imaging, Groningen University Medical Centre, Groningen, The Netherlands.