Funding for this research was provided by:
National Science Foundation of China (81873037)
Instituto Nacional de Ciência e Tecnologia da Criosfera (2018YFC1704500)
Received: 13 June 2019
Accepted: 25 November 2019
First Online: 10 December 2019
: All experiments were reviewed and approved by the Committee of Ethics on Animal Experiments at the TJAB (TJAB-JY-2011-002) and were carried out under the Guidelines for Animal Experiments at the Tianjin University of Traditional Chinese Medicine.
: Not applicable.
: The authors declare that they have no competing interests.