1. College of Veterinary Medicine; The Ohio State University; Columbus OH 43210 USA
2. Royal Veterinary College; South Mimms, Hertfordshire AL9 7TA UK
3. Ontario Veterinary College; University of Guelph; Guelph Ontario Canada N1G 2W1
4. College of Medicine; University of Saskatchewan; Saskatoon Canada S7N 0W8
5. College of Veterinary Medicine; Auburn University; Auburn AL 36849 USA
6. College of Veterinary Medicine; North Carolina State University; Raleigh NC 27606 USA
7. Faculty of Life Sciences; University of Copenhagen; Copenhagen Denmark
8. University of Pennsylvania School of Veterinary Medicine; Philadelphia PA 19104 USA
9. Women's and Children's Hospital; North Adelaide SA 5006 Australia
10. University of California, Davis; Davis CA 95616 USA