Funding for this research was provided by:
China Postdoctoral Science Foundation (2016T90027)
China Postdoctoral Science Foundation (2015m570026)
National Natural Science Foundation of China (11501026)
National Natural Science Foundation of China (11471031)
National Natural Science Foundation of China (91430216)
National Natural Science Foundation of China (U1530401)
Directorate for Mathematical and Physical Sciences (DMS-1419040)
National Natural Science Foundation of China (11571384)
National Natural Science Foundation of China (11428103)
Guangdong NSF (2014A030313179)
Fundamental Research Funds for the Central University Grant (16lgjc80)
Article History
Received: 31 December 2016
Revised: 25 July 2017
Accepted: 2 August 2017
First Online: 8 August 2017
Change Date: 5 December 2017
Change Type: Correction
Change Details: The original version of this article unfortunately contained an error.