An, Chao
Ma, Sai-jian
Xue, Wen-jiao
Liu, Chen
Ding, Hao
Funding for this research was provided by:
National Natural Science Foundation of China (21576160)
Shaanxi Provincial Science and Technology Department (2017NY-192, 2018NY-152)
Shaanxi academy of sciences project (2018nk-01, 2018K- 09)
Article History
Received: 30 December 2018
Accepted: 14 March 2019
First Online: 28 March 2019
Compliance with ethical standards
:
: The authors declare that there is no conflict of interests regarding the publication of this paper.