1. Department of Veterinary Microbiology, Faculty of Agriculture, Tottori University, Tottori 680-8553
2. Department of Medicine, Bangladesh Agricultural University
3. S. K. Hospital, Mymensingh, Bangladesh
4. Department of Virology and Parasitology, Fujita Health University School of Medicine, Toyoake, Aichi
5. Department of Hygiene, Faculty of Medicine, Sapporo Medical School of Medicine, Sapporo, Japan