Funding for this research was provided by:
Natural Sciences Foundation of China (31372444, 31660716)
Received: 20 June 2018
Accepted: 10 May 2019
First Online: 24 May 2019
: The authors declare that they have no competing interests.
: For all porcine clinical samples used in this study, written consents were obtained from farm owners and all procedures were carried out in strict accordance with the Animal Ethics Procedures and Guidelines of the People’s Republic of China. All the animal protocols in this study were approved by the Ethics Committee of Guangxi University.
: Not applicable.
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