[1] Christie Hosp, Manchester, Lancs, England
[2] Queens Med Inst, Edinburgh, Midlothian, Scotland
[3] Kings Coll Hosp London, London, England
[4] Worthing Dist Hosp, Western Sussex, England
[5] Guys & St Thomas NHS Fdn Trust, London, England
[6] Univ Birmingham, Ctr Endocrinol Diabet & Metab, Birmingham B15 2TT, W Midlands, England
[7] Churchill Hosp, Oxford Ctr Diabet Endocrinol & Metab, Oxford, England
[8] Leicester Royal Infirm, Diabet Res Dept, Leicester, Leics, England
[9] Hillingdon Hosp, London, England