1Norwegian School of Veterinary Sciences, Department of Basic Sciences and Aquatic Medicine, Section of Aquatic Medicine and Nutrition, P.O. Box 8146 Dep NO-033, Oslo, Norway.
2Department of Disease Control, School of Veterinary Medicine, University of Zambia, P.O. Box 32379, Lusaka, Zambia.
3Department of Clinical Studies, School of Veterinary Medicine, University of Zambia, P.O. Box 32379, Lusaka, Zambia.
4Kavango Transfrontier Wild Animal, Gaborone, Botswana. JFIF d d Ducky d qhttp://ns.adobe.com/xap/1.0/