Faculty of Veterinary Science and School of Information Technologies, University of Sydney, Sydney, New South Wales 2006, Australia.|Faculty of Veterinary Science and School of Information Technologies, University of Sydney, Sydney, New South Wales 2006, Australia.|Faculty of Veterinary Science and School of Information Technologies, University of Sydney, Sydney, New South Wales 2006, Australia.|Faculty of Veterinary Science and School of Information Technologies, University of Sydney, Sydney, New South Wales 2006, Australia.