1. College of Veterinary Medicine, Chungbuk National University, Cheongju, Korea.
2. Division of Infectious Diseases, Department of Internal Medicine, College of Medicine, Soonchunhyang University, Asan, Korea.
3. Division of Control for Zoonotic and Vector Borne Disease, Korea Disease Control and Prevention Agency, Cheongju, Korea.
4. Division of Infectious Disease, Department of Internal Medicine, Yonsei University College of Medicine, Seoul, Korea.