Funding for this research was provided by:
National Natural Science Foundation of China (U1504819)
Article History
Received: 20 November 2019
Accepted: 26 November 2019
First Online: 10 December 2019
Compliance with ethical standards
:
: Author Chengbin Zhao declares that he has no conflict of interest. Author Yuyuan Gao declares that he has no conflict of interest. Author Ruiming Guo declares that he has no conflict of interest. Author Hongwei Li declares that he has no conflict of interest. Author Bo Yang declares that he has no conflict of interest.
: All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional and/or national research committee and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards.
: For this type of study, Informed consent was obtained from all individual participants included in the study.