Funding for this research was provided by:
National Natural Science Foundation of China (31870475, U1805244)
Natural Science Foundation of Fujian province, China (2013J05057)
PIFI CAS (2017VEB0008)
Received: 15 May 2019
Revised: 12 August 2019
Accepted: 7 October 2019
First Online: 23 October 2019
Compliance with ethical standards
: The authors declare that they have no competing interests.
: This article does not contain any studies with human participants or animals performed by any of the authors.