作者单位:
Department of Veterinary Microbiology and Preventive Medicine, Ames, College of Veterinary Medicine, Iowa State University, Iowa, USA
[1]
epartment of Animal Science, College of Agriculture, Iowa State University, Ames, Iowa, USA
[2]
Department of Veterinary Diagnostic and Production Animal Medicine, College of Veterinary Medicine, Iowa State University, Ames, Iowa, USA
[3]
发布时间
2013-11-20