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. 2022 Jan 18;24(1):e28858. doi: 10.2196/28858

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©Ralf Schmälzle, Shelby Wilcox. Originally published in the Journal of Medical Internet Research (https://www.jmir.org), 18.01.2022.

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 https://www.jmir.org/, as well as this copyright and license information must be included.

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The left panel provides a schematic overview of the message engine construction and message generation workflow. The right panel illustrates a few examples of candidate messages. GPT: Generative Pretrained Transformer; GPT-2: Generative Pretrained Transformer-2.