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).