1. From the Wellcome–Medical Research Council Institute of Metabolic Science (C.K.B., J.M.A., J.W., M.E.W., R.H.) and the Department of Paediatrics (J.M.A., J.W., M.E.W., A.T., R.H.), University of Cambridge, and Wolfson Diabetes and Endocrine Clinic, Cambridge University Hospitals NHS Foundation Trust (C.K.B., S.H.), Cambridge, the Department of Paediatric Diabetes and Endocrinology, Nottingham Children’s Hospital, Nottingham (T.R.), the Department of Diabetes, Alder Hey Children’s NHS Foundation Trust,...