1. Department of Clinical Epidemiology, Leiden University Medical Center, 2300RC Leiden, the Netherlands
2. Department of Internal Medicine, Section of Gerontology and Geriatrics, Leiden University Medical Center, 2300 RC Leiden, the Netherlands
3. Radcliffe Department of Medicine, Oxford Centre for Diabetes, Endocrinology and Metabolism, University of Oxford, Oxford, OX3 7LE, UK
4. Department of Human Genetics, Leiden University Medical Center, 2300RC Leiden, the Netherlands
5. Department of Internal Medicine, Division of Endocrinology, Leiden University Medical Center, 2300RC Leiden, the Netherlands
6. Department of Human Nutrition and Health, Wageningen University, Wageningen, the Netherlands
7. Department of Biomedical Data Sciences, Leiden University Medical Center, 2300RC Leiden, the Netherlands
8. National Institute for Health Research, Oxford Biomedical Research Centre, Oxford, OX4 2PG, UK
9. Oxford University Hospitals Foundation Trust, Oxford, OX4 4XN, UK