Funding for this research was provided by:
Ministry of Education (National Research Foundation of Korea)
Received: 5 November 2019
Accepted: 11 March 2020
First Online: 23 March 2020
: All experiments were carried out in accordance with the National Institutes of Health (NIH) guidelines and approved by the Ethics Committee of the College of Veterinary Medicine, Kyungpook National University, Daegu, Republic of Korea (Permit number: 2017–0014).
: Not applicable.
: The authors declare that they have no competing interests.