Correction to: Trials 22, 638 (2021)

https://doi.org/10.1186/s13063-021-05610-0

Following the publication of the original article [1], we were notified of a spelling error in the name of author Gustavo Waclawovsky (missing letter “v”).

  • Originally published name: Gustavo Waclawosky

  • Corrected name: Gustavo Waclawovsky

The original article has been corrected.