Song, Dan
Yang, Rong
Fang, Shunyan
Liu, Yanping
Long, Feng
Funding for this research was provided by:
National Natural Science Foundation of China (21675171, 21277173)
National Instrument Major Project of China (2012YQ3011105)
Research Funds of Renmin University of China (15XNLD04)
Article History
Received: 25 June 2018
Accepted: 6 October 2018
First Online: 18 October 2018
Compliance with ethical standards
: The author(s) declare that they have no competing interests.