Liu, Liqun
Xu, Bing
Zhang, Xiaoping
Wu, Xianjun
Funding for this research was provided by:
Funds of Science & Technology Research of Guangdong Province, China (2015B010128015, 2017A040403070)
Natural Science Foundation of Guangdong Province (2017A030307027)
Article History
Received: 3 February 2018
Accepted: 25 April 2018
First Online: 9 May 2018
Competing interests
: The authors declare that they have no competing interests.
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