1. INSERM; Centre for Research in Epidemiology and Population Health; Epidemiology of Occupational and Social Determinants of Health; Villejuif France
2. Université de Versailles St Quentin; Villejuif France
3. Department of Epidemiology and Public Health; University College London; London UK
4. Centre de Gérontologie; Hôpital Ste Périne; Paris France
5. Finnish Institute of Occupational Health; Turku Finland
6. Department of Public Health; University of Turku and Turku University Hospital; Turku Finland
7. School of Social and Community Medicine; University of Bristol; Bristol UK