Deng, Guosheng
Article History
First Online: 6 April 2017
Compliance with Ethical Standards
:
: The authors declare that they have no conflict of interest with respect to the research, authorship, and/or publication of this article.
: 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.