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. 2021 May 6;9(5):e25895. doi: 10.2196/25895

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©June K Robinson, Shiv Patel, Seung Yun Heo, Elizabeth Gray, Jaeman Lim, Kyeongha Kwon, Zach Christiansen, Jeffrey Model, Jacob Trueb, Anthony Banks, Mary Kwasny, John A Rogers. Originally published in JMIR mHealth and uHealth (https://mhealth.jmir.org), 06.05.2021.

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 JMIR mHealth and uHealth, is properly cited. The complete bibliographic information, a link to the original publication on https://mhealth.jmir.org/, as well as this copyright and license information must be included.

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Smartphone screen showing the real-time UV-B dose in relation to the threshold dose at which the participant would get a sunburn; the predicted weather, including cloud cover; UV index; and temperature.