Published on in Vol 22, No 9 (2020): September
Preprints (earlier versions) of this paper are
available at
https://preprints.jmir.org/preprint/18870, first published
.
![Patient Portal Barriers and Group Differences: Cross-Sectional National Survey Study Patient Portal Barriers and Group Differences: Cross-Sectional National Survey Study](https://asset.jmir.pub/assets/559263b616dc9e6c91ca08ded80a74f6.png 480w,https://asset.jmir.pub/assets/559263b616dc9e6c91ca08ded80a74f6.png 960w,https://asset.jmir.pub/assets/559263b616dc9e6c91ca08ded80a74f6.png 1920w,https://asset.jmir.pub/assets/559263b616dc9e6c91ca08ded80a74f6.png 2500w)
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