Cai, Zhi
Ren, Fujie
Chi, Yuanying
Jia, Xibin
Duan, Lijuan
Ding, Zhiming
Funding for this research was provided by:
National Key R&D Program of China (2017YFC0803300)
Natural Science Foundation of Beijing Municipality (4172004)
National Natural Science Foundation of China (91546111)
Beijing Municipal Education Commission (KZ201610005009)
Beijing Municipal Education Commission (KM201610005022)
Article History
Received: 5 September 2017
Revised: 9 March 2018
Accepted: 22 March 2018
First Online: 5 April 2018