He, Qing
Liao, Bang-Hua
Xiao, Kai-Wen
Zhou, Liang
Feng, Shi-Jian
Li, Hong
Wang, Kun-Jie http://orcid.org/0000-0001-8289-2791
Funding for this research was provided by:
National Natural Science Foundation of China (81770703, 81470927)
Project of the Health and Family Planning Committee of Sichuan Province (16PI294)
1.3.5 project for disciplines of excellence, West China Hospital, Sichuan University (ZY2016104)
Article History
Received: 10 June 2018
Accepted: 6 September 2018
First Online: 19 September 2018
Compliance with ethical standards
:
: The authors declare that no conflict of interest exists.
: This meta-analysis was based on published studies. Therefore, ethical approval and informed consent are not required for this type of study.