1. Centre of Endocrinology, Diabetes, and Metabolism (T.T.L.P., M.C., E.G., A.B., S.E.E., P.N.), School of Clinical and Experimental Medicine, College of Dental and Medical Sciences, University of Birmingham, Edgbaston B15 2TT, United Kingdom
2. Department for Health (N.D., D.T.), University of Bath, Bath BA2 7AY, United Kingdom
3. Oxford Centre of Diabetes, Endocrinology, and Metabolism (S.C.L.G.), University of Oxford, Churchill Hospital, Headington OX3 7LJ, United Kingdom