1. Department of Epidemiology, University of Groningen, University Medical Center Groningen, Groningen, the Netherlands
2. Department of Internal Medicine, University of Groningen, University Medical Center Groningen, Groningen, the Netherlands
3. Julius Center for Health Sciences and Primary Care, University Medical Center Utrecht, Utrecht, the Netherlands
4. Department of Research, Thermo Fisher Scientific/BRAHMS GmbH, Hennigsdorf, Germany
5. Department of Cardiology, University of Groningen, University Medical Center Groningen, Groningen, the Netherlands