1. Vascular System Research Center, School of Medicine, Kangwon National University, Chuncheon 200-701, Korea.
2. Department of Surgery, School of Medicine, Kangwon National University, Chuncheon 200-701, Korea.
3. Department of Molecular and Cellular Biochemistry, School of Medicine, Kangwon National University, Chuncheon 200-701, Korea.
4. Cardiovascular Center, Kangwon National University Hospital, School of Medicine, Kangwon National University, Chuncheon 200-701, Korea.
5. Department of Biochemistry, College of Life Science and Biotechnology, Yonsei University, Seoul 120-752, Korea.