Guo, Lifang
Shi, Mingbiao
Song, Nan
Wan, Zirui
Liu, He
Liu, Lihong
Funding for this research was provided by:
Natural Science Foundation of Beijing Municipality (7151004)
Article History
Received: 10 November 2018
Accepted: 16 February 2019
First Online: 18 March 2019
Compliance with ethical standards
:
: The authors declare that they have no conflict of interest.
: This article does not contain any studies with human participants or animals performed by any of the authors.