1. Centre for Research in Environmental Epidemiology (CREAL), Barcelona, Spain
2. IMIM (Hospital del Mar Research Institute), Barcelona, Spain
3. CIBER Epidemiología y Salud Pública (CIBERESP), Spain
4. Department of Experimental and Health Sciences, Pompeu Fabra University, Barcelona, Spain
5. University of Valencia, Valencia, Spain
6. Center for Public Health Research-CSISP, Valencia, Spain
7. Department of Preventive Medicine and Public Health, (EHU-UPV), University of the Basque Country, Gipuzkoa, Spain
8. University of Oviedo, Asturias, Spain
9. Gillings School of Global Public Health, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA