Zhang, Xiufeng
Liu, Linlin
Xie, Runfang
Wang, Guiyi
Shi, Yuan
Gu, Tao
Hu, Liping
Nie, Shengjie
Funding for this research was provided by:
the Natural Science Foundation of China (31660310)
the Science and Technology Planning Projects of Yunnan Province (2013FZ066, 2014FZ005)
the Yunnan Educational Science Foundation program (2014Y180)
Article History
Received: 2 May 2017
Accepted: 30 August 2017
First Online: 8 September 2017
Compliance with ethical standards
:
: The authors declare that they have no conflicts of interest.