Liu, Han
Jing, Bin
Han, Wenjuan
Long, Zhuqing
Mo, Xiao
Li, Haiyun
Funding for this research was provided by:
National Natural Science Foundation of China (81220108007)
Beijing Natural Science Foundation (4122018)
Beijing Natural Science Foundation (7174282)
Article History
Received: 26 September 2018
Accepted: 21 January 2019
First Online: 1 February 2019
Compliance with ethical standards
:
: The authors declare that they have no conflict of interest.
: All procedures performed in studies involving human participants were in accordance with the ethical standards of the national research committee.
: For this type of study formal consent is not required.