1. a College of Pharmacy, Seoul National University, San 56-1, Sillim-dong, Gwanak-gu, Seoul 151-742, South Korea
2. b Mediplex Corporation, 1204 ACE High-End Tower, 235-2, Guro-3-dong, Guro-gu, Seoul 152-711, South Korea; Department of Textile Engineering, Kyung Hee University, 1, Seocheon-dong, Yongin-si, Gyeonggi-do 449-701, South Korea
3. c Biomedical Research Center, Korea Institute of Science and Technology, 39-1 Hawolgok-dong, Seongbuk-gu, Seoul 136-791, South Korea
4. d College of Pharmacy, Seoul National University, San 56-1, Sillim-dong, Gwanak-gu, Seoul 151-742, South Korea
5. e Mediplex Corporation, 1204 ACE High-End Tower, 235-2, Guro-3-dong, Guro-gu, Seoul 152-711, South Korea. htmoon@mediplex.co.kr