Protocol and registration
The present meta-analysis was designed according to the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) guidelines [14]. The study was based in aggregated data that have been already published in the international literature. Patient consent and institutional review board approval were not retrieved as they are not required in this type of studies. The study‘s protocol was published in open science framework, prior to the conduct of this review (Registration DOI: 10.17605/OSF.IO/UGWT6).