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. 2020 May 29;22(5):e17349. doi: 10.2196/17349

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©Aijing Luo, Zirui Xin, Yifeng Yuan, Tingxiao Wen, Wenzhao Xie, Zhuqing Zhong, Xiaoqing Peng, Wei Ouyang, Chao Hu, Fei Liu, Yang Chen, Haiyan He. Originally published in the Journal of Medical Internet Research (http://www.jmir.org), 29.05.2020.

This is an open-access article distributed under the terms of the Creative Commons Attribution License (https://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work, first published in the Journal of Medical Internet Research, is properly cited. The complete bibliographic information, a link to the original publication on http://www.jmir.org/, as well as this copyright and license information must be included.

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Structured content coding for the original question record of a patient with hypertension. B3.2 denotes a question about taking medication and A2 denotes a question about symptoms and signs.