1. Biomedical Research Center, Northwest Minzu University, Lanzhou, P.R. China.
2. Department of Microbiology, Government College University Faisalabad, Faisalabad, Pakistan.
3. Institute of Microbiology, University of Agriculture Faisalabad, Faisalabad, Pakistan.
4. College of Veterinary Medicine, South China Agricultural University, Guangzhou, China.
5. Menzies Health Institute Queensland and School of Medical Science, Griffith University, Southport, Australia.
6. The Paul G. Allen School for Global Animal Health, Washington State University, Pullman, Washington, USA.