Ma, Xinlong
Lan, Feng
Zhang, Yuqi
Article History
Received: 20 August 2020
Accepted: 7 September 2020
First Online: 9 January 2021
Compliance with ethical standards
:
: All authors certify that they have no affiliations with or involvement in any organization or entity with any financial interest (such as honoraria; educational grants; participation in speakers’ bureaus; membership, employment, consultancies, stock ownership, or other equity interest; and expert testimony or patent-licensing arrangements), or non-financial interest (such as personal or professional relationships, affiliations, knowledge or beliefs) in the subject matter or materials discussed in this manuscript.
: We exclusively assessed previously published data. Thus, ethical approval was not required for the conduction of the meta-analysis and systematic review.
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