1. Thyroid Molecular Laboratory, Institute for Medical and Molecular Genetics (INGEMM), La Paz University Hospital, Autonomous University of Madrid, Madrid, Spain.
2. The Rare Diseases Networking Biomedical Research Centre (CIBERER), Instituto de Salud Carlos III, Madrid, Spain.
3. Department of Endocrinology, La Paz University Hospital, Madrid, Spain.
4. Department of Pediatric Endocrinology, Virgen de la Arrixaca University Hospital, Murcia, Spain.
5. Department of Pediatric Endocrinology, La Paz University Hospital, Madrid, Spain.
6. Department of Pediatric Endocrinology, Elda University Hospital, Alicante, Spain.
7. Department of Endocrinology, Virgen Del Rocío University Hospital, Sevilla, Spain.
8. Clinical Chemistry Department, Alicante University Hospital, Alicante, Spain.
9. Department of Endocrinology, Alicante University Hospital, Alicante, Spain.
10. Department of Endocrinology and Metabolism Disorders, Ege University Medical Faculty, Izmir, Turkey.
11. Department of Endocrine and Nervous System, Instituto de Investigaciones Biomédicas, CSIC, and CIBERER Instituto de Salud Carlos III, Madrid, Spain.
12. Department of Histology and Anatomy, Faculty of Medicine, Universidad Miguel Hernández de Elche, Alicante, Spain.