Fu, Jian
Sun, Haibin
Wei, Haofei
Dong, Mingjie
Zhang, Yongzhe
Xu, Wei
Fang, Yanwei
Zhao, Jianhui http://orcid.org/0000-0002-6083-1856
Funding for this research was provided by:
This study was supported by the Health and Family Planning Commission Science Foundation of Hebei Province (No. 20170101)
Article History
Received: 14 March 2020
Accepted: 9 July 2020
First Online: 23 July 2020
Consent for publication
: This paper is approved by all authors for publication.
: The authors declared that they have no competing interests.