Yan, Bai-zhong
Chen, Zi-fang
Funding for this research was provided by:
China's Post-doctoral Science Fund (2018M631874)
Scientific Research Projects of the Higher University in Hebei (ZD2014023)
Bureau of Science and Technology of Hebei Province (2017-59)
Natural science fund project in Hebei province (D2018403040)
Article History
Received: 30 August 2018
Accepted: 19 March 2019
First Online: 28 March 2019
Compliance with ethical standards
:
: The authors declare that they have no conflict of interest.
: This article does not contain any studies with human participants or animals performed by any of the authors.
: Informed consent was obtained from all individual participants included in the study.