Jing, Yun
Liu, Yingke
Bi, Mingkai
Funding for this research was provided by:
The National Natural Science Foundation of China (61403022)
Beijing Natural Science Foundation (J160003)
The Fundamental Research Funds for the Central Universities (2017JBM030)
Article History
Received: 28 July 2017
Revised: 25 September 2017
Accepted: 26 October 2017
First Online: 16 November 2017
Compliance with ethical standards
:
: The authors declare that they have no conflict of interest.