Published on in Vol 11 (2023)
Preprints (earlier versions) of this paper are
available at
https://preprints.jmir.org/preprint/43241, first published
.
![Promoting Hand Hygiene During the COVID-19 Pandemic: Parallel Randomized Trial for the Optimization of the Soapp App Promoting Hand Hygiene During the COVID-19 Pandemic: Parallel Randomized Trial for the Optimization of the Soapp App](https://asset.jmir.pub/assets/3d6de32e7b4c7c7cd225704ea698288b.png 480w,https://asset.jmir.pub/assets/3d6de32e7b4c7c7cd225704ea698288b.png 960w,https://asset.jmir.pub/assets/3d6de32e7b4c7c7cd225704ea698288b.png 1920w,https://asset.jmir.pub/assets/3d6de32e7b4c7c7cd225704ea698288b.png 2500w)
1 Institute of Psychology, University of Bern, Bern, Switzerland
2 Institute of Psychology, University of Lausanne, Lausanne, Switzerland
3 Institute for Social Work and Health, FHNW School of Social Work, Olten, Switzerland