1. Department of Diagnostic Medicine/Pathobiology, College of Veterinary Medicine, Kansas State University, Manhattan, KS 66506, USA
2. Department of Veterinary Diagnostic and Production Animal Medicine, College of Veterinary Medicine, Iowa State University, Ames, IA 50011, USA
3. Smithfield Foods, 434 E Main St., Waverly, VA 23890, USA
4. Clinical Pathology, Biomedical and Diagnostic Sciences, College of Veterinary Medicine, University of Tennessee, Knoxville, TN 37996, USA
5. Institute of Virology, University of Veterinary Medicine Hannover, Foundation, 30559 Hannover, Germany
6. Viral Gastroenteritis Branch, Division of Viral Diseases, National Center for Immunization and Respiratory Diseases (NCIRD), Centers for Disease Control and Prevention, 1600 Clifton Rd NE, Atlanta, GA 30329, USA
7. Science and Technology, Indical Inc., Orlando, FL 32804, USA