1. J M Kim:
Department of Veterinary Surgery, Royal Animal Medical Center, Seoul, Republic of Korea
2. H Kim:
Department of Veterinary Surgery, Royal Animal Medical Center, Seoul, Republic of Korea
3. S W Jang:
Department of Veterinary Surgery, Royal Animal Medical Center, Seoul, Republic of Korea
4. S H Choi:
Veterinary Medical Center, Chungbuk National University, Cheongju, Republic of Korea
5. I S Jeong:
Department of Veterinary Surgery, Royal Animal Medical Center, Seoul, Republic of Korea