1. Department of Surgical Oncology and Gastrointestinal Surgery Erasmus MC Cancer Institute Rotterdam the Netherlands
2. Department of Internal Medicine Erasmus MC Academic Center for Thyroid Diseases Rotterdam the Netherlands
3. Department of Internal Medicine Albert Schweitzer Hospital Dordrecht the Netherlands
4. Department of Pathology Erasmus MC Rotterdam the Netherlands
5. Department of Pathology Radboud University Medical Center Nijmegen the Netherlands
6. Department of Pathology University Medical Center Groningen, University of Groningen Groningen the Netherlands
7. Laboratory for Pathology Dordrecht the Netherlands
8. Division of Endocrinology, Department of Internal Medicine Radboud University Medical Center Nijmegen the Netherlands
9. Department of Endocrinology University Medical Center Groningen, University of Groningen Groningen the Netherlands