Funding for this research was provided by:
Rijksuniversiteit Groningen (Not applicable)
China Scholarship Council (201704910487)
National Natural Science Foundation of China (91634204, U1608221)
Article History
Received: 7 October 2019
Accepted: 20 November 2019
First Online: 7 February 2020
Compliance with ethical standards
:
: On behalf of all authors, the corresponding author states that there is no conflict of interest.