Funding for this research was provided by:
National Natural Science Foundation of China (41420104002)
National Research Foundation of Korea (2015R1C1A2A01053980)
Institute for Basic Science (IBS-R0280-D1)
National Science Foundation (AGS-1540783)
Article History
Received: 23 May 2019
Accepted: 27 September 2019
First Online: 29 October 2019
Competing interests
: The authors declare no competing interests.