Correction: Hernia (2021) 26:225–232 https://doi.org/10.1007/s10029-021-02498-2

The collaborators group does not contains the below authors:

Joana F. F. Simoes, José Azevedo, João Parracho da Costa, Miguel Cunha, Joaquim J. Ferreira, Andreia Guimarães, Ana Alagoa João, Mariana Peyroteo, Maria Picciochi, Irène Santos, Bárbara Vieira, António Sampaio Soares. PT Surg (Portuguese Collaborative Research Group)

The original article has been corrected.