Wang, Fuyan
Cheng, Jun
Zhai, Hualei
Dong, Yanling
Li, Hua
Xie, Lixin http://orcid.org/0000-0002-3577-5768
Funding for this research was provided by:
The National Science Foundation of Shandong Province (ZR2017BH026)
Article History
Received: 18 July 2019
Revised: 4 October 2019
Accepted: 23 October 2019
First Online: 12 November 2019
Compliance with ethical standards
:
: The authors declare that they have no conflict of interest in this manuscript.
: All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional and national research committee and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards.
: Informed consent was obtained from all individual participants included in the study.