Corresponding Author

Jiangchao Zhao

Department of Animal Science, Division of Agriculture, University of Arkansas, Fayetteville, AR, USA

Correspondence:

Yongchang Sun, Department of Respiratory and Critical Care Medicine, Peking University Third Hospital, Beijing, China. North Garden Rd. 49. Haidian District, Beijing, 100191, China, Tel: +86 010 139 1097 9132, Fax +86 108 226 6989

E-mail: suny@bjmu.edu.cn

Jiangchao Zhao, Department of Animal Science, Division of Agriculture, University of Arkansas, Fayetteville, AR, 72701, USA, Tel: +1-479-575-6323, Fax: 479-575-7294

Email: jzhao77@uark.edu

Chun Chang: Department of Respiratory and Critical Care Medicine, Peking University Third Hospital, Beijing, China. North Garden Rd. 49. Haidian District, Beijing, 100191, China, Tel: +86 010 158 1007 5362, Fax +86 106 482 1910

E-mail: doudou_1977@163.com

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