Published on in Vol 6, No 2 (2020): Apr-Jun
Preprints (earlier versions) of this paper are
available at
https://preprints.jmir.org/preprint/16119, first published
.
![Participatory Surveillance Based on Crowdsourcing During the Rio 2016 Olympic Games Using the Guardians of Health Platform: Descriptive Study Participatory Surveillance Based on Crowdsourcing During the Rio 2016 Olympic Games Using the Guardians of Health Platform: Descriptive Study](https://asset.jmir.pub/assets/871bdb9b39adc95253947bde41a8caa3.png 480w,https://asset.jmir.pub/assets/871bdb9b39adc95253947bde41a8caa3.png 960w,https://asset.jmir.pub/assets/871bdb9b39adc95253947bde41a8caa3.png 1920w,https://asset.jmir.pub/assets/871bdb9b39adc95253947bde41a8caa3.png 2500w)
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