Correction to: Trials 22, 49 (2021)

https://doi.org/10.1186/s13063-020-04986-9

Following publication of the original article [1], we were notified of a typo in the spelling of the 10th author name, originally spelt as “Cavdon” instead of “Cavedon” (i.e., missing “e”).

The original article has been corrected.