1. Division of Endocrinology, Department of Internal Medicine, University Medical Center Groningen, Groningen, The Netherlands.
2. Division of Vascular Medicine, Department of Internal Medicine, University Medical Center Groningen, Groningen, The Netherlands.
3. Surgical Research Laboratory, Department of Surgery, University Medical Center Groningen, Groningen, The Netherlands.
4. Department of Laboratory Medicine, University Medical Center Groningen, Groningen, The Netherlands.
5. Department of Hematology, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands.