Article History
Received: 7 October 2018
Accepted: 6 March 2019
First Online: 11 March 2019
Compliance with ethical standards
:
: Author Liangfeng Chen declares that he has no conflict of interest. Author Xiaobing Han declares that she has no conflict of interest. Author Zhongzhou Hu declares that he has no conflict of interest. Author Liangxin Chen declares that he has 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. All animal experiments were performed in accordance with the Guidelines for Care and Use of Laboratory Animal.
: Informed consent was obtained from all individual participants included in the study.