1. Department of Veterinary Diagnostic and Production Animal Medicine; Iowa State University College of Veterinary Medicine; Ames IA USA
2. Zalk Veterinary Medical Library; University of Missouri; Columbia MO USA
3. IDEXX Livestock; Poultry and Dairy; Westbrook ME USA
4. Centre for Public Health and Zoonoses; University of Guelph; Guelph ON Canada
5. Department of Population Medicine; Ontario Veterinary College; University of Guelph; Guelph ON Canada