[1] Univ Sunderland, Fac Hlth Sci & Wellbeing, Sunderland, England
[2] Prince Charles Hosp, Endocrinol & Diabet Dept, Cardiff, S Glam, Wales
[3] Newcastle Univ, Inst Genet Med, Newcastle Upon Tyne, Tyne & Wear, England
[4] Sch Med, Inst Mol Med, Cardiff, S Glam, Wales
[5] British Thyroid Fdn, Harrogate, England
[6] Univ Dundee, Sch Med, Dundee, Scotland
[7] Queen Elizabeth Hosp, Dept Endocrinol, Gateshead, England