Yi, ZhongQuan
Zhao, PanWen
Zhang, Hui
Shi, YuanYuan
Shi, HaiChun
Zhong, JianGuo
Pan, PingLei http://orcid.org/0000-0002-9288-6384
Funding for this research was provided by:
National Natural Science Foundation of China (81601161)
Jiangsu Provincial Commission of Health and Family Planning (QNRC2016466)
Article History
Received: 10 October 2019
Accepted: 20 December 2019
First Online: 7 January 2020
Compliance with ethical standards
:
: The authors declare that they have no conflict of interest.
: This article does not contain any studies with human participants or animals performed by any of the authors. Since the study was a meta-analysis based on already available data from published papers, ethical approval is not necessary.