Zhou, Hairong
Che, Yanjuan
Fu, Xiuhua
Wei, Hong
Gao, Xiuying
Chen, Yanxuan
Zhang, Shaopeng
Article History
First Online: 20 October 2018
Compliance with ethical standards
:
: The 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.