Wang, Zhen
Xu, Haoying
Funding for this research was provided by:
National Natural Science Foundation of China (71302129)
Article History
Received: 19 October 2016
Accepted: 25 April 2017
First Online: 10 May 2017
Compliance with Ethical Standards
:
: All procedures performed in this study were in accordance with the ethical standards of the institutional research committee and with the 1964 Declaration of Helsinki and its later amendments or comparable ethical standards.
: Informed consent was obtained from all individual participants included in this study.