Funding for this research was provided by:
the Basic Research Plan Project of Hebei Province (18966801D)
the National Key Program on Transgenic Research of China (2018ZX08020002)
Article History
Received: 13 January 2018
Revised: 13 November 2018
Accepted: 7 January 2019
First Online: 14 January 2019
Compliance with ethical standards
:
: The authors declare that they have no competing interests.
: Our study does not involve ethics approval and consent to participate.
: All authors read and approved the final manuscript.