1. Health Statistics GroupInstitute of Health Research, University of Exeter Medical School Exeter UK
2. Institute of Biomedical and Clinical ScienceRoyal Devon and Exeter Hospital Exeter UK
3. Nuffield Department of Primary Care Health SciencesUniversity of Oxford Oxford UK
4. Institute of Cardiovascular and Medical SciencesUniversity of Glasgow Glasgow UK
5. Diabetes Trials Unit, Oxford Centre for Diabetes, Endocrinology and MetabolismUniversity of Oxford Oxford UK
6. Division of Molecular and Clinical Medicine, Ninewells Hospital and Medical SchoolUniversity of Dundee Dundee UK