Author contributions
The entirety of the manuscript was written by AL. All figures and tables were also designed by AL. The process of screening of titles and abstracts for the inclusion or exclusion of articles for this systematic review was conducted by both AL and CP. Disagreements during this process were resolved by discussion with DB. Finally, both DB and MA were responsible for the revision of the manuscript before submission.

Conflict of interest statement
The authors declare that the research was conducted in the absence of any commercial or financial relationships that could be construed as a potential conflict of interest.