Correction: Trials 23, 913 (2022)

https://doi.org/10.1186/s13063-022-06829-1

The original publication of this article [1] contained 2 redundant affiliations in the author information and in the “administrative information table”. These redundant affiliations (previously numbered nr. 2 and 10) have been deleted. The publisher apologizes to the author for the inconvenience caused.