ISGlobal, Centre for Research in Environmental Epidemiology (CREAL), Barcelona, Spain.|Department of Epidemiology, Brown University School of Public Health, Rhode Island, USA.|ISGlobal, Centre for Research in Environmental Epidemiology (CREAL), Barcelona, Spain.|ISGlobal, Centre for Research in Environmental Epidemiology (CREAL), Barcelona, Spain.|ISGlobal, Centre for Research in Environmental Epidemiology (CREAL), Barcelona, Spain.|ISGlobal, Centre for Research in Environmental Epidemiology (CREAL), Barcelona, Spain.|ISGlobal, Centre for Research in Environmental Epidemiology (CREAL), Barcelona, Spain.