Published on in Vol 23, No 6 (2021): June
Preprints (earlier versions) of this paper are
available at
https://preprints.jmir.org/preprint/27989, first published
.
![Quality and Adoption of COVID-19 Tracing Apps and Recommendations for Development: Systematic Interdisciplinary Review of European Apps Quality and Adoption of COVID-19 Tracing Apps and Recommendations for Development: Systematic Interdisciplinary Review of European Apps](https://asset.jmir.pub/assets/d03a29cd1b67af2e8fbb74a2e9ca7619.png 480w,https://asset.jmir.pub/assets/d03a29cd1b67af2e8fbb74a2e9ca7619.png 960w,https://asset.jmir.pub/assets/d03a29cd1b67af2e8fbb74a2e9ca7619.png 1920w,https://asset.jmir.pub/assets/d03a29cd1b67af2e8fbb74a2e9ca7619.png 2500w)
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