Funding for this research was provided by:
National Key R&D Program of China (2017YFD0400102)
Article History
Received: 25 April 2019
Accepted: 26 June 2019
First Online: 12 July 2019
Compliance with Ethical Standards
:
: Wen Zhang declares no conflict of interest. Chao Liu declares no conflict of interest. Xiaobo Zou declares no conflict of interest. Han Zhang declares no conflict of interest. Yiwei Xu declares no conflict of interest.
: This article does not contain any studies with human participants or animals performed by any of the authors.
: Informed consent is not applicable for the nature of this study.