1. Ontario Veterinary College; University of Guelph; 50 Stone Road Guelph Ontario N1G 2W1 Canada
2. Canadian Cooperative Wildlife Health Centre; University of Guelph; 50 Stone Road Guelph Ontario N1G 2W1 Canada
3. Toronto Zoo; 361A Old Finch Avenue Toronto Ontario M1B 5K7 Canada
4. Animal Health Laboratory; University of Guelph; 95 Stone Road West Guelph Ontario N1H 8J7 Canada