Zhi, Xiaohui
Cai, Lin
Guo, Na
Liu, Xuejia
Article History
Received: 26 December 2018
Accepted: 13 February 2019
First Online: 1 March 2019
Compliance with ethical standards
:
: Author Xiaohui Zhi declares that he has no conflict of interest. Author Lin Cai declares that he has no conflict of interest. Author Na Guo declares that he has no conflict of interest. Author Xuejia Liu 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.
: Informed consent was obtained from all individual participants included in the study.