1. Department of Veterinary Services, Ministry of Fisheries and Livestock, P.O. Box 50060, Lusaka 10101, Zambia
2. National Research Center for Protozoan Diseases, Obihiro University of Agriculture and Veterinary Medicine, Inada, Obihiro, Hokkaido 080-8555, Japan
3. Faculty of Pharmaceutical Sciences, Shonan University of Medical Sciences, 16-48 Kamishinano, Totsuka-ku, Yoko-hama 244-0806, Japan
4. Department of Biomedical Sciences, School of Veterinary Medicine, University of Zambia, P.O. Box 32379, Lusaka 10101, Zambia
5. School of Animal and Veterinary Sciences, College of Agriculture, Fisheries and Forestry, Fiji National University, Koronivia Campus, Suva, Fiji
6. Rigaku Corporation, 3-9-12 Matsubara-cho, Akishima-shi, Tokyo 196-8666, Japan
7. Division of Pharmacognosy, Tohoku Medical and Pharmaceutical University, 4-1 Komatsushima 4-chome Aoba-ku, Sendai 981-8558, Japan