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. 2018 Feb 20;4:3. doi: 10.1186/s40748-017-0072-y

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© The Author(s) 2018

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 — Trend of blood pressure changes in normal pregnancy. Y-axis: Mean blood pressure (mmHg). X-axis: Category of women. SBP: systolic blood pressure (p = 0.118). DBP: diastolic blood pressure (p < 0.001). MAP: mean arterial pressure (p = 0.009). The upper, lower and middle values represent mean systolic blood pressure, diastolic blood pressure and mean arterial pressure for category of women respectively