Funding for this research was provided by:
National Natural Science Foundation of China (61472452, 61772565)
National Natural Science Foundation of China (61602116, 61502179)
Natural Science Foundation of Guangdong Province of China (2017A030313378)
Science and Technology Program of Guangzhou City of China (201707010194)
Fundamental Research Funds for the Central Universities (17lgzd29)
Research Foundation for Talented Scholars of Foshan University (gg040996)
Article History
Received: 20 December 2017
Accepted: 7 May 2018
First Online: 15 May 2018