1. Departments of Otolaryngology–Head & Neck Surgery, Regional Thyroid Cancer Unit, Queen Elizabeth Hospital, University of Birmingham NHS Trust, Edgbaston, Birmingham, United Kingdom.
2. Department of Endocrinology, Regional Thyroid Cancer Unit, Queen Elizabeth Hospital, University of Birmingham NHS Trust, Edgbaston, Birmingham, United Kingdom.
3. Division of Medical Sciences, Institute for Biomedical Research, University of Birmingham, Edgbaston, Birmingham, United Kingdom.
4. Department of Radiology, Regional Thyroid Cancer Unit, Queen Elizabeth Hospital, University of Birmingham NHS Trust, Edgbaston, Birmingham, United Kingdom.