. 2018 Dec 7;48(3):1004–1013. doi: 10.1093/ije/dyy264
© The Author(s) 2018; all rights reserved. Published by Oxford University Press on behalf of the International Epidemiological Association
This article is published and distributed under the terms of the Oxford University Press, Standard Journals Publication Model (https://academic.oup.com/journals/pages/open_access/funder_policies/chorus/standard_publication_model)
Figure 1.
Description of the four study cohorts by age, sex and race.