Wang, Xingxing
Du, Yuanyuan https://orcid.org/0000-0003-1925-7263
Wu, Hailong
Zhang, Shiruo
Qi, Xinzhu
Nie, Kaichong
Article History
Received: 17 October 2018
Accepted: 2 February 2019
First Online: 20 February 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/or national research committee and with the 1964 Helsinki Declaration and its later amendments or comparable ethical standards. For this type of study, formal consent is not required.