1. Centre for Veterinary Wildlife Studies, Faculty of Veterinary Science, University of Pretoria, Private Bag X04, Onderstepoort 0110, South Africa
2. Division of Chemical Pathology, Faculty of Health Sciences, University of Cape Town, Private Bag X3, Rondebosch 7701, South Africa
3. Department of Wildlife and National Parks, PO Box 131, Gaborone, Botswana
4. Ezemvelo KZN Wildlife, PO Box 13053, Cascades 3202, South Africa