Institution: | (1) Department of Animal Health, Institute of Tropical Medicine, Nationalestraat 155, 2000 Antwerp, Belgium;(2) Department of Veterinary and Livestock Development, P.O. Box 670050, Mazabuka, Zambia;(3) Department of Parasitology-Entomology section, Institute of Tropical medicine, Nationalestraat 155, 2000 Antwerpen, Belgium;(4) Department of Invertebrates-Malacology section, Royal Belgian Institute of Natural Sciences, Vautierstraat 29, B-1000 Brussels, Belgium |