From the aBarcelona Institute for Global Health (ISGlobal), Barcelona, Spain
bFaculty of Health Sciences, Simon Fraser University, Vancouver, BC, Canada.
This commentary was sponsored by the International Society of Environmental Epidemiology (ISEE). The contents are the sole responsibility of the author(s) and do not necessarily reflect the official views of the ISEE.
The authors report no conflicts of interest.
Correspondence: Manolis Kogevinas, Barcelona Institute for Global Health (ISGlobal), 88 Doctor Aiguader Rd., 08003 Barcelona, Spain. E-mail: firstname.lastname@example.org.