Footnotes

• Contributors Invited commentary.

• Funding This research received no specific grant from any funding agency in the public, commercial or not-for-profit sectors.

• Competing interests Both authors are primary investigators on an ongoing randomised controlled trial on the use of magnesium sulfate in preterm birth.

• Patient consent Detail has been removed from this case description/these case descriptions to ensure anonymity. The editors and reviewers have seen the detailed information available and are satisfied that the information backs up the case the authors are making.

• Provenance and peer review Commissioned; internally peer reviewed.

• Collaborators Hanne Trap Wolf

• Correction notice This article has been corrected since original publication to include a second author who was previously missed.