1. Oxford Centre for Diabetes, Endocrinology, and Metabolism (C.C., P.D., F.K.), Churchill Hospital, Oxford OX3 7LJ, United Kingdom
2. National Institute for Health Research, Oxford Biomedical Research Centre (C.C., F.K.), Oxford Radcliffe Hospitals Trust, Churchill Hospital, Oxford OX3 7LJ, United Kingdom
3. Cardiovascular and Urogenital Centre for Excellence in Drug Discovery (D.S.), GlaxoSmithKline, King of Prussia, Pennsylvania 19406
4. Centre for Integrated Systems Biology and Medicine (K.T.), School of Biomedical Sciences, Nottingham University, Nottingham NG7 2UH, United Kingdom