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Article History

Accepted: 16 June 2021

First Online: 26 June 2021

Declarations

:

: No sources of funding were used for the preparation of this article.

: Michał Kuzemczak, Abdalazeem Ibrahem, and Mohammad Alkhalil have no conflicts of interest that are directly relevant to the content of this article.

: No approval was obtained from the ethics committee or institutional review board as the conducted research was a study-level meta-analysis.

: Not applicable.

: Not applicable.

: Data are available from the corresponding author on a reasonable request.

: Not applicable.

: Conceptualization: MA. Investigations: MK, AI, MA. Methodology and project administration: MA. Data curation and software: MA. Formal analysis: MA. Resources: all authors. Writing original draft and preparation: all authors. Writing review and editing: all authors.