Published on in Vol 24, No 12 (2022): December
Preprints (earlier versions) of this paper are
available at
https://preprints.jmir.org/preprint/42359, first published
.
![Accuracy and Systematic Biases of Heart Rate Measurements by Consumer-Grade Fitness Trackers in Postoperative Patients: Prospective Clinical Trial Accuracy and Systematic Biases of Heart Rate Measurements by Consumer-Grade Fitness Trackers in Postoperative Patients: Prospective Clinical Trial](https://asset.jmir.pub/assets/a67554d58ceab6ddabe54c79c72ba023.png 480w,https://asset.jmir.pub/assets/a67554d58ceab6ddabe54c79c72ba023.png 960w,https://asset.jmir.pub/assets/a67554d58ceab6ddabe54c79c72ba023.png 1920w,https://asset.jmir.pub/assets/a67554d58ceab6ddabe54c79c72ba023.png 2500w)
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