1. Julius Center for Health Sciences and Primary Care, University Medical Center Utrecht, Utrecht, The Netherlands
2. Center for Nutrition and Health, National Institute for Public Health and the Environment, National Institute for Public Health and the Environment, Bilthoven, The Netherlands
3. Center for Prevention and Health Services Research, National Institute for Public Health and the Environment, Bilthoven, The Netherlands
4. Department of Molecular Epidemiology, German Institute of Human Nutrition, Potsdam, Germany