Yang, Fuyi
Xu, Jianzhong http://orcid.org/0000-0002-0269-4590
Article History
First Online: 9 November 2017
Compliance with Ethical Standards
:
: The authors declare no conflict of interest.
: All procedures performed in the research involving human participants were compliant with the ethical standards of the institutional and national research committee and with the 1964 Helsinki declaration and its amendments or comparable ethical standards.
: Informed consent was obtained from all participants in the current study.