Shen, Xiaohua http://orcid.org/0000-0003-0372-2079
Zhang, Meixiang
Jiao, Xuehua
Cang, Xiaofeng
Lu, Ye
Article History
Received: 4 January 2019
Accepted: 2 May 2019
First Online: 30 May 2019
Compliance with ethical standards
:
: The authors declare that they have no conflicts 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.This article does not contain any studies with animals performed by any of the authors.
: Informed consent was obtained from all individual participants included in the study.