Article History
Accepted: 11 July 2021
First Online: 9 August 2021
Declarations
: On behalf of all authors, the corresponding author states that there is no conflict of interest.
: Since the meta-analysis is a secondary review of data, a review under an ethics review board was not required for the research to be conducted ethically.
: Since this meta-analysis is a secondary review of data that has already been collected and analyzed, informed consent forms were not required for this research. However, in the primary data collection the authors from the studies used in this meta-analytic review obtained informed consent forms.
: N/A