Mao, Lele http://orcid.org/0000-0001-9104-3150
Bai, Wenpei
Huo, Yuliang
Zhou, Yingfang
Yao, Chen
Xi, Sisi
Chen, Xing
Sun, Yu
Article History
Received: 22 May 2017
Accepted: 25 January 2018
First Online: 21 February 2018
Compliance with ethical standards
:
: The authors 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.
: Informed consent was obtained from all individual participants included in the study.