1. College of Veterinary Medicine and Research Institute of Veterinary Medicine, Chungbuk National University, Cheongju, 361-763, Korea
2. College of Agriculture, Chungbuk National University, Cheongju, 361-763, Korea
3. College of Veterinary Medicine, Chonnam National University, Gwangju, 500-757, Korea
4. Research Division of Biological Science, Chosun University Medical School, Gwangju, 501-759, Korea
5. Hamilton College of Oriental Medicine, Hamilton, New Zealand