1. Institute for Laboratory Medicine, Clinical Chemistry and Molecular Diagnostics , University Hospital, University of Leipzig , Leipzig , Germany
2. Department of Laboratory Medicine and Pathology , Mayo Clinic , Rochester , MN , USA
3. Clinical Laboratory , Fondazione IRCCS Ca’ Granda Ospedale Maggiore Policlinico , Milan , Italy
4. Department of Medicine , Monash University , Clayton , VIC , Australia
5. Division for Specific Endocrinology , Medical Faculty, University of Düsseldorf , Düsseldorf , Germany
6. Department of Laboratory Medicine , Radboud University Medical Center , Nijmegen , the Netherlands
7. Division of Endocrinology , EPM/UNIFESP , São Paulo , Brazil
8. Roche Diagnostics GmbH , Penzberg , Germany
9. Roche Diagnostics International Ltd , Rotkreuz , Switzerland
10. Clinic for Nuclear Medicine and Competence Centre for Thyroid Diseases , Ente Ospedaliero Cantonale , Bellinzona , Switzerland
11. Clinic for Nuclear Medicine and Thyroid Centre , University Hospital, University of Zurich , Zurich , Switzerland