1. Department of Clinical Studies, Ontario Veterinary College, University of Guelph, Guelph, ON N1G 2W1, Canada
2. School of Veterinary Science, Massey University, Palmerston North 4442, New Zealand
3. Dipartimento di Scienze e Tecnologie Agro-Alimentari, Alma Mater Studiorum—Università di Bologna, Viale Fanin 50, 40126 Bologna, Italy
4. School of Medicine and Public Health, University of Newcastle, Newcastle, NSW 2300, Australia
5. Hunter New England Local Health District, Wallsend, NSW 2287, Australia