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Authors
Li, Yanhui https://orcid.org/0000-0002-9921-4425
Chen, Qionghua
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Funding
Funding for this research was provided by:
National Natural Science Foundation of China (81871145)
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Article History
Received: 14 May 2019
Accepted: 3 September 2019
First Online: 11 October 2019
Compliance with ethical standards
:
: The authors declared no potential conflicts of interest with respect to the research, authorship, and/or publication of this article.
: The authors declare that there are no ethical issues, because this meta-analysis required the study of previous studies without any intervention of the patients.
