1. Department of Endocrinology, Prince Charles Hospital, Cwm Taf University Health Board, Merthyr Tydfil, UK
2. Department of Endocrinology, University Hospital of Wales, Cardiff and Vale University Health Board, Cardiff, UK
3. Thyroid Research Group, Systems Immunity Research Institute, Cardiff University School of Medicine, Cardiff, UK
4. Department of Clinical Biochemistry, Prince Charles Hospital, Cwm Taf University Health Board, Merthyr Tydfil, UK
5. Faculty of Life Sciences and Education, University of South Wales, Pontypridd, UK