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Authors
Guo, Run-Qi https://orcid.org/0000-0001-7026-6937
Guo, Xiao-Xiao
Li, Yuan-Ming
Bie, Zhi-Xin
Li, Bin
Li, Xiao-Guang
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Funding
Funding for this research was provided by:
Scientific Research Starting Foundation for PhD/MD (BJ-2019-135)
Scientific Research Foundation for Central Health Care (2020YB10)
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Article History
Received: 29 September 2020
Accepted: 26 November 2020
First Online: 2 January 2021
Compliance with ethical standards
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: The authors declare that they have no conflict of interest.
: All of the included studies mentioned the approval of institutional review board. This study was a systematic review and meta-analysis. Ethics committee approval was not necessary because all data were carefully extracted from existing literature, and this article did not involve handling of individual patient data. In addition, neither patients nor the public were involved in the design and planning of the study.
