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. 2020 Apr 15;4(4):e14747. doi: 10.2196/14747

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©Marie-Luise Zeisler, Leman Bilgic, Maria Schumann, Annelene Wengler, Johannes Lemcke, Antje Gößwald, Thomas Lampert, Claudia Santos-Hövener, Patrick Schmich. Originally published in JMIR Formative Research (http://formative.jmir.org), 15.04.2020.

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 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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Distribution of American Association for Public Opinion Research disposition codes (%) by citizenship and assignment to intervention group A or control group B.