Funding for this research was provided by:
National Natural Science Foundation of China (21878103, 21676098, 21808069)
State Key Laboratory of Pulp and Paper Engineering (2017C03)
China Postdoctoral Science Foundation (2018T110871, 2017M612667)
Fundamental Research Funds for the Central Universities (2017BQ084, 2017PY013)
Natural Science Foundation of Guangdong Province of China (2018A030310368)
Text and Data Mining valid from 2019-09-10
Received: 12 August 2019
Accepted: 5 September 2019
First Online: 10 September 2019
Ethics approval and consent to participate
: Not applicable as this article does not contain any studies with human participants or animals performed by any of the authors.
: Not applicable.
: The authors declare that they have no competing interests.