Published on in Vol 8, No 2 (2020): February
Preprints (earlier versions) of this paper are
available at
https://preprints.jmir.org/preprint/12452, first published
.
![Circadian Rhythms in the Telephone Calls of Older Adults: Observational Descriptive Study Circadian Rhythms in the Telephone Calls of Older Adults: Observational Descriptive Study](https://asset.jmir.pub/assets/f95cc1fa41abd416d9c81fbf96a37df2.png 480w,https://asset.jmir.pub/assets/f95cc1fa41abd416d9c81fbf96a37df2.png 960w,https://asset.jmir.pub/assets/f95cc1fa41abd416d9c81fbf96a37df2.png 1920w,https://asset.jmir.pub/assets/f95cc1fa41abd416d9c81fbf96a37df2.png 2500w)
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