Zhong, Wenyong http://orcid.org/0000-0003-1073-6567
Wang, Lanfang
Funding for this research was provided by:
Natural Science Foundation of Hunan Province of China (11JJ3007)
Article History
Received: 14 March 2018
Accepted: 2 September 2018
First Online: 12 September 2018
Competing interests
: The authors declare that they have no competing interests.