Chen, Aiguo
Li, Xuemei
Ni, Xueting
Luo, Guangchun
Funding for this research was provided by:
the science and technology supporting project of Sichuan Provincial Science and Technology Department (2016GZ0075, 2016GZ0077)
the International science and technology cooperation project of Sichuan Provincial Science and Technology Department (2017HH0075)
Article History
Received: 31 October 2017
Accepted: 20 January 2018
First Online: 24 April 2018
Competing interests
: The authors declare that they have no competing interests.
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