1. School of Chemical and Biological Engineering; Seoul National University; Seoul 151-744 Republic of Korea
2. Department of Cardiology; Chonnam National University Hospital; Gwangju 501-757 Republic of Korea
3. Interdisciplinary Program of Bioengineering; Seoul National University; Seoul 151-744 Republic of Korea
4. Department of Chemistry; Seoul National University; Seoul 151-747 Republic of Korea
5. Bio-MAX Institute; Institute of Chemical Processes; Engineering Research Institute; Seoul National University; Seoul 151-744 Korea