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. 2018 Mar 22;18(Suppl 1):16. doi: 10.1186/s12911-018-0593-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. 4 — Annotated tag distribution under the categories of diagnosis and treatment. Data set 1 is the 2000 hypertension related questions collected by our previous work, and data set 2 includes 3000 questions we randomly selected from 5 Chi-nese health websites under 6 broad sections: internal medicine, surgery, obstetrics & gynecology, pediatrics, infectious diseases, and traditional Chinese medicine