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. 2019 May 28;19:645. doi: 10.1186/s12889-019-7004-x

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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. 1 — Description of oral and anal swabs results in MSM at baseline and follow-up (24 months after baseline). Data are expressed as absolute numbers (grey column, corresponding to the total number of samples of the specific study time) and as percentage of samples with HR HPV detection, non-HR HPV detection and no HPV detection in the specific study time (red, yellow and green columns). MSM: men who have sex with men. HR-HPV: high risk HPV genotypes. Non-HR-HPV: only non high risk HPV genotypes. HPV: human papillomavirus