Correction: Trials 22, 253 (2021)

https://doi.org/10.1186/s13063-021-05211-x

Following publication of the original article [1], a minor error was found in the "Trial status" section:

The time in the sentence of ‘The first patient was recruited on 20 July 2019’ is incorrect, the correct sentence should be: The first patient was recruited on 20 July 2020.

The original paper has been updated.