Li, Duo http://orcid.org/0000-0003-0142-9290
Wagner, Peter
Funding for this research was provided by:
Alexander von Humboldt-Stiftung ((N/A))
Natural Science Basic Research Plan in Shaanxi Province of China ((2017JQ5033))
China Postdoctoral Science Foundation funded project (2017M620434)
Shaanxi Province Postdoctoral Science Foundation funded project (2017BSHEDZZ38)
the Fundamental Research Funds for the Central Universities (300102218401, 300102218404)
Article History
Received: 3 October 2018
Accepted: 3 July 2019
First Online: 9 July 2019
Competing interests
: The authors declare that they have no competing interests.