1. College of Pharmacy; Kangwon National University; Chunchon 200-701 Korea
2. College of Natural Science (Biochemistry); Kangwon National University; Chunchon 200-701 Korea
3. Department of Physiology, School of Medicine; Chungnam National University; Daejeon 301-747 Korea
4. Department of Genetic Engineering; Sungkyunkwan University; Suwon 440-746 Korea
5. Institute for Bio-Medical Convergence; International St. Mary's Hospital and College of Medicine, Catholic Kwandong University; Incheon 404-834 Korea