[1] Univ Leeds, Leeds Inst Cardiovasc & Metab Med, Leeds, W Yorkshire, England
[2] Sheffield Teaching Hosp NHS Fdn Trust, Cardiothorac Ctr, Dept Cardiol, Sheffield, S Yorkshire, England
[3] Chesterfield Royal Hosp NHS Fdn Trust, Dept Geriatr Med, Chesterfield, England
[4] Barnsley Hosp NHS Fdn Trust, Med Imaging Dept, Barnsley, England
[5] Univ Sheffield, Acad Unit Child Hlth, Dept Oncol & Metab, Sheffield, S Yorkshire, England
[6] Barnsley Hosp NHS Fdn Trust, Dept Endocrinol & Metab Med, Barnsley, S Yorkshire, England