Xiang, Ju
Li, Hui-Jia http://orcid.org/0000-0003-1000-717X
Bu, Zhan
Wang, Zhen http://orcid.org/0000-0002-8182-2852
Bao, Mei-Hua
Tang, Liang
Li, Jian-Ming
Funding for this research was provided by:
Natural Science Foundation of Beijing Municipality (9182015)
Article History
Received: 27 October 2017
Accepted: 8 May 2018
First Online: 27 September 2018
Competing Interests
: The authors declare no competing interests.