1. Laboratory of Clinical Pharmacokinetics and Pharmacodynamics, College of Veterinary Medicine, Kyungpook National University, Daegu, 702-701, Republic of Korea
2. Department of Animal Science & Biotechnology, College of Agriculture and Life Science, Chungnam National University, Daejeon, 305-764, Republic of Korea
3. CJ CheilJedang Corporation, Seoul, 636, Republic of Korea