Zhao, Liang http://orcid.org/0000-0001-7313-1034
Article History
Received: 3 September 2017
Accepted: 30 March 2018
First Online: 2 April 2018
Compliance with ethical standards
:
: The authors declare no potential conflicts of interest with respect to the research, authorship, and publication of this article.
: All procedures performed in this study involving human participants were in accordance with the ethical standards of the Committee on Publication Ethics’ International Standards.
: Informed consent was obtained from all individual participants included in the study.