1. Department of Veterinary Pathology, University of Ibadan, Ibadan, Nigeria
2. Department of Veterinary Pathology, Faculty of Veterinary Medicine, University of Ibadan, Ibadan, Nigeria
3. Veterinary Pathology, University of Ibadan, Ibadan, Nigeria
4. Pathobiology, Kwame Nkrumah University of Science and Technology, Kumasi, Ghana, USA