1. Division Visible Policing Veterinary Science Services Arcadia South Africa
2. Section of Reproduction Department of Production Animal Studies Faculty of Veterinary Science University of Pretoria Onderstepoort South Africa
3. Mammal Research Institute Department of Zoology and Entomology Faculty of Natural and Agricultural Sciences University of Pretoria Pretoria South Africa
4. Department of Production Animal Studies Faculty of Veterinary Science University of Pretoria Onderstepoort South Africa