Published on in Vol 22, No 11 (2020): November
Preprints (earlier versions) of this paper are
available at
https://preprints.jmir.org/preprint/23851, first published
.
![The State of Evidence in Patient Portals: Umbrella Review The State of Evidence in Patient Portals: Umbrella Review](https://asset.jmir.pub/assets/56fa1ca618049b56cf8bdc3e74ed5300.png 480w,https://asset.jmir.pub/assets/56fa1ca618049b56cf8bdc3e74ed5300.png 960w,https://asset.jmir.pub/assets/56fa1ca618049b56cf8bdc3e74ed5300.png 1920w,https://asset.jmir.pub/assets/56fa1ca618049b56cf8bdc3e74ed5300.png 2500w)
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