Funding for this research was provided by:
Natural Science Foundation of Heilongjiang Province (C2016049)
Harbin City Technology Bureau Youth Talented Person Project (RC2017QN020010)
Text and Data Mining valid from 2019-12-18
Received: 26 August 2019
Revised: 14 November 2019
Accepted: 8 December 2019
First Online: 18 December 2019
Compliance with ethical standards
: Animal experiments were carried out in compliance with the guidelines for the care and use of laboratory animals and the institutional ethical guidelines in China.
: The authors declare that they have no conflict of interest.