Conflict of interest:
There are no competing interests to declare.
Funding: The PIE clinical trial by Cluver et al . was supported by the Mercy Perinatal Foundation, the South African Medical Research Council, and the Preeclampsia Foundation. The study by Hunfeldet al. was supported by an educational grant from AstraZeneca to Haga Teaching Hospital. The study by Helgadóttir et al. was supported by the University of Iceland Research fund. Part of this PK analysis was supported by a grant obtained by Manna Semere Gebreyesus from the National Research Foundation (NRF).
Data availability statement: The data that support the findings of this study are available from the corresponding authors of the original studies upon reasonable request.