1. Department of Environmental Health, Harvard School of Public Health, Boston, Massachusetts, USA
2. INSERM, Centre for Research in Epidemiology and Population Health, U1018, Social and Occupational Determinants of Health, F-94807, Villejuif, France
3. Université de Versailles St-Quentin, UMRS 1018, F-78035, Versailles, France
4. Department of Epidemiology, Harvard School of Public Health, Boston, Massachusetts, USA