Li, Na
Wang, Xingcui
Sun, Congcong
Wu, Xinwei
Lu, Mei
Si, Youfeng
Ye, Xiang
Wang, Tan
Yu, Xiaolin
Zhao, Xinjing
Wei, Na
Wang, Xingbang
Funding for this research was provided by:
Shandong Provincial Natural Science Foundation, China (ZR2016HB37)
Shandong Medical Science and Technology Development Plan Project (2017WS433)
Shandong Medical Science and Technology Development Plan Project (2017WSA01044)
Science and technology projects of Jinan health and family planning commission (2016-1-50)
Article History
Received: 5 May 2019
Accepted: 24 July 2019
First Online: 19 August 2019
Ethics approval and consent to participate
: The protocol of this study was approved by the local Ethical Committee of the Qilu Hospital of Shandong University (KYLL-2017(KS)-088). All volunteers received information concerning their participation in the study and gave written informed consent.
: Not applicable.
: The authors declare that they have no competing interests.