1. Department of Endocrinology and Nutrition, Health Sciences Research Institute and University Hospital Germans Trias i Pujol, Badalona, Spain.
2. Centre for Biomedical Research on Diabetes and Associated Metabolic Diseases (CIBERDEM), ISCIII, Badalona, Spain.
3. Consortium for the study of thyroid cancer (CECaT), Badalona, Spain.
4. Diabetes and Metabolism Research Unit (VHIR) and Department of Endocrinology, University Hospital Vall d'Hebron and Autonomous University of Barcelona, Barcelona, Spain.
5. Department of Endocrinology and Nutrition, University Hospital Arnau de Vilanova and University of Lleida, Biomedical Research Institute of Lleida, Lleida, Spain.
6. Department of Pathology and Molecular Genetics, University Hospital Arnau de Vilanova and University of Lleida, Biomedical Research Institute of Lleida, Lleida, Spain.
7. Biostatistics and Epidemiology Unit, Biomedical Research Institute of Lleida, Lleida, Spain.
8. Department of Endocrinology and Nutrition, University Hospital Parc Taulí Sabadell, Barcelona, Spain.
9. Department of Pathology, University Hospital Parc Taulí Sabadell, Barcelona, Spain.
10. Department of Endocrinology and Nutrition, University Hospital Clinic Barcelona, Barcelona, Spain.
11. Department of Pathology, Vall d'Hebron University Hospital and Autonomous University of Barcelona, Barcelona, Spain.
12. Hereditary Endocrine Cancer Group, Spanish National Cancer Centre, Madrid, Spain.
13. Centre for Biomedical Research on Rare Diseases (CIBERER), ISCIII, Madrid, Spain.