Published on in Vol 22, No 6 (2020): June
Preprints (earlier versions) of this paper are
available at
https://preprints.jmir.org/preprint/17109, first published
.
![Menstrual Cycle Length and Patterns in a Global Cohort of Women Using a Mobile Phone App: Retrospective Cohort Study Menstrual Cycle Length and Patterns in a Global Cohort of Women Using a Mobile Phone App: Retrospective Cohort Study](https://asset.jmir.pub/assets/29459a89c550c72eb5f58810f2ec17fc.png 480w,https://asset.jmir.pub/assets/29459a89c550c72eb5f58810f2ec17fc.png 960w,https://asset.jmir.pub/assets/29459a89c550c72eb5f58810f2ec17fc.png 1920w,https://asset.jmir.pub/assets/29459a89c550c72eb5f58810f2ec17fc.png 2500w)
1 Robinson Research Institute, University of Adelaide, Adelaide, Australia
2 Adelaide Medical School, University of Adelaide, Adelaide, Australia
3 Fertility SA, Adelaide, Australia