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. 2019 Apr 18;21(4):e13404. doi: 10.2196/13404

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©Brianna Mae Goodale, Mohaned Shilaih, Lisa Falco, Franziska Dammeier, Györgyi Hamvas, Brigitte Leeners. Originally published in the Journal of Medical Internet Research (http://www.jmir.org), 18.04.2019.

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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Wearable technology can detect changes in 5 physiological parameters across the menstrual cycle. The smoothed, normalized values of each physiological parameter (with 95% CIs) collapsed across individuals (n=193) and cycles (n=708) are shown, centered around participant-reported luteinizing hormone peak.