Funding for this research was provided by:
National Natural Science Foundation of China (61773353, 61374106)
Hubei Provincial Natural Science Foundation of China (2015CFA010)
111 project (B17040)
Article History
Received: 12 October 2017
Accepted: 22 May 2018
First Online: 2 June 2018
Compliance with ethical standards
:
: The authors confirm that this work is original and has not been published elsewhere, nor is it currently under consideration for publication elsewhere. And the authors declare that they have no conflict of interest.
: This article does not contain any researches involving human participants and animals, and the informed consent the informed consent was obtained from all individual participants included in the study.