Shen, Jie
Zhang, Hongru
Funding for this research was provided by:
National Natural Science Foundation of China (71572157, 71132003)
Article History
Received: 7 September 2016
Accepted: 7 April 2017
First Online: 2 May 2017
Compliance with Ethical Standards
:
: Authors declare that they have 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.