Published on in Vol 8, No 10 (2020): October
Preprints (earlier versions) of this paper are
available at
https://preprints.jmir.org/preprint/18160, first published
.
![Symbol Digit Modalities Test Variant in a Smartphone App for Persons With Multiple Sclerosis: Validation Study Symbol Digit Modalities Test Variant in a Smartphone App for Persons With Multiple Sclerosis: Validation Study](https://asset.jmir.pub/assets/ead30ad7f7c1f281a45a3a23f6c9da8d.png 480w,https://asset.jmir.pub/assets/ead30ad7f7c1f281a45a3a23f6c9da8d.png 960w,https://asset.jmir.pub/assets/ead30ad7f7c1f281a45a3a23f6c9da8d.png 1920w,https://asset.jmir.pub/assets/ead30ad7f7c1f281a45a3a23f6c9da8d.png 2500w)
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