Published on in Vol 24, No 12 (2022): December
Preprints (earlier versions) of this paper are
available at
https://preprints.jmir.org/preprint/37467, first published
.
![Web-Based Short Video Intervention and Short Message Comparison of Repeat Blood Donation Behavior Based on an Extended Theory of Planned Behavior: Prospective Randomized Controlled Trial Study Web-Based Short Video Intervention and Short Message Comparison of Repeat Blood Donation Behavior Based on an Extended Theory of Planned Behavior: Prospective Randomized Controlled Trial Study](https://asset.jmir.pub/assets/e1e692ca9e38d5ed26e6555dc250037a.png 480w,https://asset.jmir.pub/assets/e1e692ca9e38d5ed26e6555dc250037a.png 960w,https://asset.jmir.pub/assets/e1e692ca9e38d5ed26e6555dc250037a.png 1920w,https://asset.jmir.pub/assets/e1e692ca9e38d5ed26e6555dc250037a.png 2500w)
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