[1] Univ Coll London Hosp NHS Trust, Great Ormond St Hosp NHS Trust, Ctr Endocrine Surg, London, England
[2] UCL Inst Child Hlth, Clin & Mol Genet Unit, Dev Endocrinol Res Grp, London, England
[3] Great Ormond St Hosp Sick Children, London Ctr Paediat Endocrinol & Diabet, London, England
[4] Univ Coll London Hosp, London, England
[5] Barts Hlth NHS Trust, Dept Paediat Endocrinol, London, England
[6] Great Ormond St Hosp Sick Children, Inst Child Hlth, Dept Nephrol, London, England