1. ISGlobal, Barcelona, Spain
2. Universitat Pompeu Fabra (UPF), Barcelona, Spain
3. CIBER Epidemiología y Salud Pública (CIBERESP), Madrid, Spain
4. Center for Research in Occupational Health, UPF, Barcelona, Spain
5. IMIM (Hospital del Mar Medical Research Institute), Barcelona, Spain
6. Facultad Lationamericana de Ciencias Sociales (FLACSO), Salamanca, Spain
7. Department of Epidemiology, Brown University School of Public Health, Providence, Rhode Island, USA
8. Department of Social and Environmental Health Research, London School of Hygiene & Tropical Medicine, London, UK