He, Lili
Sun, Yinghua
Hu, Xihong
Yao, Qiong
Funding for this research was provided by:
General Program of Shanghai Municipal Commission of Health and Family Planning (201640070)
Article History
Received: 19 April 2021
Revised: 21 June 2021
Accepted: 24 June 2021
First Online: 30 July 2021
Declarations
:
: The scientific guarantor of this publication is Qiong Yao.
: The authors declare no competing interests.
: No complex statistical methods were necessary for this paper.
: Not applicable in this study
: Institutional Review Board approval was not required because it’s meta-analysis.
: • This meta-analysis was performed in accordance with the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) reporting guidelines