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. 2019 May 28;19:470. doi: 10.1186/s12879-019-4019-y

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© The Author(s). 2019

Open AccessThis article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The Creative Commons Public Domain Dedication waiver (http://creativecommons.org/publicdomain/zero/1.0/) applies to the data made available in this article, unless otherwise stated.

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Fig. 2 — Overview of participants with both a blood sample and a questionnaire and corresponding response rates (n(%)). a: Overview of number of participants of the national sample and oversampling of non-Western migrants of the PIENTER-3 study, stratified by sex and age class. b: Overview of number of participants of the low vaccination coverage sample of the PIENTER-3 study, stratified by sex and age class. c: Overview of number of participants of the Caribbean Netherlands sample, stratified by sex and age class. d: Overview of number of participants of the Caribbean Netherlands sample, stratified by island and age class