Chen, Peihong
Shen, Jiwei
Wang, Chaozhan
Wei, Yinmao
Funding for this research was provided by:
National Natural Science Foundation of China (21575114)
National Natural Science Foundation of China (21775121)
National Natural Science Foundation of China (21475104)
Industry Development Project by the Science and Technology Department of Shaanxi Province (2016GY-214)
Article History
Received: 9 November 2017
Accepted: 31 December 2017
First Online: 12 January 2018
Compliance with ethical standards
: The authors declare that they have no competing interests.