Zhiqiang, Duan
Meicheng, Li
Chonto, Trevor Mwenva
Funding for this research was provided by:
National Natural Science Foundation of China (51772096, 91333122, 51372082, 51402106)
Beijing Municipal Science and Technology Project (Z161100002616039)
The Fundamental Research Funds for the Central Universities (2016JQ01, 2015ZZD03, 2015ZD07, 2017ZZD02)
Article History
Received: 19 April 2018
Accepted: 18 June 2018
First Online: 4 July 2018
Competing Interests
: The authors declare that they have no competing interests.
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