1. Department of Pathobiology, Ontario Veterinary College, University of Guelph, Guelph, Ontario, Canada
2. Department of Pathobiology, College of Veterinary Medicine, University of Illinois, Urbana, IL, USA
3. Department of Veterinary Biosciences, The Ohio State University, Columbus, OH, USA
4. Boehringer Ingelheim, Ridgefield, CT, USA
5. Charles River Laboratories, Spencerville, OH, USA
6. Mary Lyons Centre, MRC Harwell, Harwell Science and Innovations Centre, Oxfordshire, UK
7. Labor am Zugersee Jonas Furrerstrasse 45, Winterthur, Switzerland