1. Division of Epidemiology and Biostatistics, European Institute of Oncology, Milan, Italy
2. Centre for Epidemiology and Statistics of the Luxembourg Institute for Health, Luxembourg
3. Department of Cardiology, Civil Hospital, Charleroi, Belgium
4. Department of Endocrinology, Metabolism and Nutrition, University Hospital Gasthuisberg, Leuven, Belgium
5. Department of Cardiology, University Hospital Saint Luc, Brussels, Belgium
6. Department of Diabetes, Nutrition and Metabolic Diseases, University Hospital Sart-Tilman, University of Liège, Belgium
7. Unit of Epidemiology and Prevention, Jules Bordet Institute, Brussels, Belgium.