Sun, Yanhua
Li, Ming
Liu, Guangjie
Zhang, Xue
Zhi, Lianghui
Zhao, Jing
Wang, Guiying http://orcid.org/0000-0002-8743-325X
Article History
Received: 1 November 2019
Accepted: 4 March 2020
First Online: 9 March 2020
Compliance with ethical standards
:
: The authors declare no conflicts of interest.
: All subjects were informed consent.
: The study was approved by the Ethics Committee of Hebei Medical University.