Funding for this research was provided by:
Zhejiang Provincial Department of Science and Technolog (2018C02028)
Received: 19 December 2018
Accepted: 24 June 2019
First Online: 15 July 2019
Ethics approval and consent to participate
: A written consent from farm owners was obtained for porcine clinical samples and serum samples used in this study. The organ sampling protocol was approved by the Animal Care and Use Committee of Zhejiang University in accordance with the Chinese guidelines for the care and use of laboratory animals.
: Not applicable.
: The authors declare that they have no competing interests.