Ma, Kaifeng
Zhang, Qixiang
Cheng, Tangren
Wang, Jia
Funding for this research was provided by:
National Natural Science Foundation of China (NO. 31501787)
Fundamental Research Funds for the Central Universities (NO. 2016ZCQ02)
Special Fund for Beijing Common Construction Project
Article History
Received: 15 September 2017
Accepted: 17 May 2018
First Online: 26 May 2018
Compliance with ethical standards
:
: The authors declare that they have no conflict of interests.
: This article does not contain any studies with human participants or animals performed by any of the authors.