Yang, Ru http://orcid.org/0000-0003-0373-706X
Zhao, Xixi
Liu, Jun
Yao, Xufeng
Hou, Feng
Xu, Yikai
Feng, Qianjin
Article History
First Online: 21 April 2020
Compliance with ethical standards
:
: All procedures performed involving human participants in the present study 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.
: Informed consent was obtained from all individual participants included in the study.
: All authors declared that they have no conflict of interest.