Funding for this research was provided by:
Boehringer Ingelheim Vetmedica Korea (-)
Received: 3 January 2020
Accepted: 30 October 2020
First Online: 23 November 2020
Ethics approval and consent to participate
: All the experimental procedures were reviewed and approved by the Ethical Committee of BioPOA Co. Permission was obtained from the veterinarians who participated in this study, and written informed consent was obtained from the farmers.
: Not applicable.
: No competing interests.