Fig. 1
From: A blood-based miRNA signature for early non-invasive diagnosis of preeclampsia
![Fig. 1](http://media.springernature.com/full/springer-static/image/art%3A10.1186%2Fs12916-022-02495-x/MediaObjects/12916_2022_2495_Fig1_HTML.png)
Study flowchart. A discovery–training–validation three-phase study was conducted with multicenter and cross-platform retrospective and prospective cohorts including four in-house cohorts (WMU cohorts 1–4), the Canada cohort, and the USA cohort