1. Department of Parasitology and Genetics, Kosin University College of Medicine, Busan, Korea;
2. Institute of Medicine, Kosin University College of Medicine, Busan, Korea;
3. Department of Physiology, Kosin University College of Medicine, Busan, Korea;
4. Department of Otorhinolaryngology-Head and Neck Surgery, Chung-Ang University School of Medicine, Seoul, Korea;
5. Department of Otorhinolaryngology, Yonsei University College of Medicine, Seoul, Korea; and
6. Department of Veterinary Physiology, College of Veterinary Medicine, Seoul National University, Seoul, Korea