Andreo-Martínez, Pedro http://orcid.org/0000-0001-6535-5492
Rubio-Aparicio, María http://orcid.org/0000-0002-2599-4246
Sánchez-Meca, Julio http://orcid.org/0000-0002-8412-788X
Veas, Alejandro http://orcid.org/0000-0002-5560-2215
Martínez-González, Agustín Ernesto http://orcid.org/0000-0002-9576-7348
Article History
Accepted: 1 April 2021
First Online: 5 May 2021
Author Contributions
: PAM and AEMG conceived and designed the systematic review, selected and coded the articles, created a database of the identified bacteria, created the article quality database and performed the risk of bias analysis. MRA created the database of selected moderators and bacteria and performed data analysis. AV performed the risk of bias analysis. JSM performed data analysis. PAM, AEMG and MRA wrote the manuscript. JSM and AV edited the manuscript and all the authors approved the final version of the manuscript.