Center for Research in Environmental Epidemiology (CREAL), Barcelona, Spain. robert.castelo@upf.edu.|Center for Research in Environmental Epidemiology (CREAL), Barcelona, Spain. robert.castelo@upf.edu.|Center for Research in Environmental Epidemiology (CREAL), Barcelona, Spain. robert.castelo@upf.edu.|Center for Research in Environmental Epidemiology (CREAL), Barcelona, Spain. robert.castelo@upf.edu.|Center for Research in Environmental Epidemiology (CREAL), Barcelona, Spain. robert.castelo@upf.edu.