Funding for this research was provided by:
National Natural Science Foundation of China (30872083)
Liaoning Science and Technology Project (2017225076)
Article History
Received: 8 September 2018
Accepted: 24 January 2019
First Online: 1 February 2019
Compliance with ethical standards
: All studies were performed according to protocols reviewed and approved by the Ethics Committee of Animal Care and Experimentation of the National Institute for Environmental Studies, China.
: The authors declare that they have no competing interests.