1. Faculty of Veterinary Science; Department of Production Animal Studies; University of Pretoria; Pretoria South Africa
2. Discipline of Veterinary Sciences; College of Public Health Medical and Veterinary Sciences; James Cook University; Townsville QLD Australia
3. Department of Veterinary Services; Ministry of Fisheries and Livestock; Lusaka Zambia
4. Midlands Poultry Health Centre; Howick South Africa
5. Avimune (Pty) Ltd.; Pretoria South Africa