Funding for this research was provided by:
the National Natural Science Foundation of China (30872083)
Shenyang Nonprofit Science and Technology Project
Article History
Received: 18 June 2018
Accepted: 16 October 2018
First Online: 24 October 2018
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 conflicts of interest.