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. 2016 Mar 15;8:8. doi: 10.1186/s13099-016-0091-7

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© Nagy et al. 2016

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 — Prevalence estimates of Helicobacter pylori infection over time in Chinese studies (numbers by data points indicate source reference citations). Data are reported for a all included datasets (n = 28), b datasets that used serum IgG assays to detect H. pylori infection (n = 20), c datasets that included individuals recruited from urban areas only (n = 9), d datasets that included individuals recruited from rural areas only (n = 11), e datasets that used serum IgG assays to detect H. pylori infection and included individuals recruited from urban areas only (n = 6), and f datasets that used serum IgG assays to detect H. pylori infection and included individuals recruited from rural areas only (n = 9). IgG immunoglobulin G