Published on in Vol 7, No 5 (2019): May
Preprints (earlier versions) of this paper are
available at
https://preprints.jmir.org/preprint/12326, first published
.
1 Nutritional Epidemiology Group, International Agency for Research on Cancer, World Health Organization, Lyon, France
2 Department of Behavioural Science and Health, University College London, London, United Kingdom
3 Leeds Institute of Health Sciences, University of Leeds, Leeds, United Kingdom