1. Endocrine Unit, Centre Hospitalier Universitaire Saint Pierre, Université Libre de Bruxelles (ULB) , Rue Haute 322, 1000 Brussels , Belgium
2. Molecular Thyroid Lab, Department of Medicine I, Johannes Gutenberg University (JGU) Medical Centre , Mainz 55101 , Germany
3. Department of Gynaecology and Obstetrics, Centre Hospitalier Universitaire Saint Pierre, Université Libre de Bruxelles (ULB) , Rue Haute 322, 1000 Brussels , Belgium
4. Department of Clinical Chemistry, LHUB-ULB, Université Libre de Bruxelles (ULB) , Rue Haute 322, 1000 Brussels , Belgium