Xu, Xifeng
Wu, Qiong
Wang, Zhen
Zheng, Song http://orcid.org/0000-0002-5870-0515
Ge, Ke
Jia, Changku
Article History
Received: 21 August 2018
Accepted: 20 November 2018
First Online: 29 November 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. For this type of study, formal consent is not required.
: Informed consent was obtained from all individual participants included in the study.