1. Vascular Homeostasis Laboratory, Departments of Molecular and Cellular Biochemistry and Institute of Medical Sciences, School of Medicine, Kangwon National University, Chuncheon 200-701, Korea.
2. Department of Rehabilitation Medicine, School of Medicine, Kangwon National University and Hospital, Chuncheon 200-701, Korea.
3. Department of Neurobiology, School of Medicine, Kangwon National University, Chuncheon 200-701, Korea.
4. Department of Biochemistry, College of Life Science and Biotechnology, Yonsei University, Seoul 120-752, Korea.