1. Department of Nutrition; Harvard School of Public Health; Boston Massachusetts USA
2. Department of Medicine; Johns Hopkins University School of Medicine; Baltimore Maryland USA
3. Department of Biostatistics; Johns Hopkins University Bloomberg School of Medicine; Baltimore Maryland USA
4. Department of Epidemiology; Johns Hopkins University Bloomberg School of Medicine; Baltimore Maryland USA
5. INSERM; U1018; CESP; Occupational and Social Determinants of Health; Villejuif France
6. University Paris XI, University Versailles Saint-Quentin; Villejuif, Versailles France, France