1. Wilhelmina Children’s Hospital and Princess Máxima Center, Utrecht, The Netherlands
2. Department of Endocrinology, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands
3. The Oncologic and Reconstructive Surgery Clinic, M. Sklodowska-Curie National Research Institute of Oncology Gliwice Branch, Gliwice, Poland
4. Department of Paediatric Endocrinology and Diabetes, Birmingham Children's Hospital NHS Foundation Trust, Birmingham, United Kingdom
5. Department of Clinical and Experimental Medicine, University of Pisa, Pisa, Italy
6. Department of Clinical Genetics, Guy's and St Thomas’ NHS Foundation Trust, London, United Kingdom
7. Institute of Experimental Pediatric Endocrinology, Charité - Universitätsmedizin, Berlin, Germany
8. Department of Visceral, Vascular and Endocrine Surgery, Martin Luther University Halle-Wittenberg, Halle (Saale), Germany
9. Department of Nuclear Medicine, University Hospital Marburg, Marburg, Germany
10. Thyroid Therapy Unit, The Royal Marsden NHS Foundation Trust, London, United Kingdom
11. Department of Nuclear Medicine, EO Ospedali Galliera, Genoa, Italy
12. University Hospital of São João, Medical Faculty and Institute of Molecular Pathology and Immunology, University of Porto, Porto, Portugal
13. Thyroid Center, Rinku General Medical Center, Osaka, Japan
14. Department of Pediatric Endocrinology, Emma Children's Hospital, Amsterdam University Medical Centers, University of Amsterdam, Amsterdam, The Netherlands
15. Department of Radiology and Nuclear Medicine, Erasmus University Medical Center, Rotterdam, The Netherlands