1. Department of Veterinary Clinical Sciences, Faculty of Veterinary Medicine and Animal Science, University of Peradeniya, Peradeniya, Sri Lanka;
2. Department of Medicine, Faculty of Medicine, University of Peradeniya, Peradeniya, Sri Lanka;
3. Department of Veterinary Pathobiology, Faculty of Veterinary Medicine and Animal Science, University of Peradeniya, Peradeniya, Sri Lanka