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. 2021 Mar 26;5(3):e27882. doi: 10.2196/27882

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©Britt Elise Bente, Jan Willem Jaap Roderick van 't Klooster, Maud Annemarie Schreijer, Lea Berkemeier, Joris Elmar van Gend, Peter Jan Hendrik Slijkhuis, Saskia Marion Kelders, Julia Elisabeth Wilhelmina Cornelia van Gemert-Pijnen. Originally published in JMIR Formative Research (http://formative.jmir.org), 26.03.2021.

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 Formative Research, is properly cited. The complete bibliographic information, a link to the original publication on http://formative.jmir.org, as well as this copyright and license information must be included.

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The CoronaMelder app as seen in the Google Play Store. The app can be installed by clicking the Install button. The text below this button reads: “Receive a notification if you have been in close contact with someone who later tested positive for COVID-19. This app is authorized for use in the Netherlands and uses the Google/Apple Exposure Notification system.” Additional information can be found in the About this app section. The text under this heading reads: “Help to stop the spread of the coronavirus in the Netherlands.”.