Sun, Jingjing
Mu, Dali
Liu, Chunjun
Xin, Minqiang
Fu, Su
Chen, Lin
Liu, Wenyue
Luan, Jie http://orcid.org/0000-0002-8927-2648
Article History
Received: 6 October 2018
Accepted: 11 December 2018
First Online: 3 January 2019
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 national research committee and with the 1964 Helsinki Declaration and its later amendments or comparable ethical standards.
: All participants signed an informed consent approved by the institutional ethics committee.