1. Fremont Veterinary Clinic; Portland Oregon USA
2. Centre for Applied Health Economics, School of Medicine, Griffith University; Meadowbrook Queensland Australia
3. Park Veterinary Group; Glenfield UK
4. Dairy Flat Veterinary Clinic; Auckland New Zealand
5. School of Veterinary Medicine and Science, Centre for Evidence-based Veterinary Medicine, University of Nottingham; Loughborough UK