Funding for this research was provided by:
National Key R&D Program of China (2016YFD0501100)
Received: 8 November 2018
Accepted: 10 March 2019
First Online: 21 March 2019
Ethics approval and consent to participate
: This study was approved by the Animal Ethics Committee of Henan Agricultural University. Experimental protocols for obtaining swine clinical samples used in this study were carried out in strict accordance with the Animal Ethics Procedures and Guidelines of the People’s Republic of China.
: Not applicable.
: No conflict of interest declared.
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