1. Department of Vascular Medicine, Academic Medical Center, Meibergdreef 9, 1105 AZ Amsterdam, The Netherlands
2. Department of Clinical Biochemistry, Herlev Ringvej 75, 2730 Herlev and Gentofte Hospital, Copenhagen University Hospital, Denmark
3. Medical Research Council Epidemiology Unit, University of Cambridge, Cambridge CB2 0QQ, UK
4. Department of Public Health and Primary Care, University of Cambridge, Cambridge CB2 0QQ, UK
5. Department of Cardiology, Academic Medical Center, Amsterdam, The Netherlands